taxonID	type	description	language	source
03925E10FFCE425BF278DDB5FCE4FDD6.taxon	type_taxon	I n d e x s p e c i e s. Melvilloceras rotaii (LIBROVITCH in POPOV, 1979).	en	Dernov, Vitaly (2022): Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine. Fossil Imprint 78 (2): 489-512, DOI: 10.37520/fi.2022.021, URL: http://dx.doi.org/10.37520/fi.2022.021
03925E10FFCE425BF278DDB5FCE4FDD6.taxon	description	S t r a t i g r a p h i c r a n g e. Between shale 100 m below the G 1 2 limestone layer and the G 4 limestone bed. A g e a n d c o r r e l a t i o n. Layerswith Melvilloceras rotaii correspond to the lower part of the GastriocerasBranneroceras Genozone, uppermost part of the lenisulcata Zone (non-marine bivalves) and lowest part of the communis Zone (lower Langsettian) of the Western Europe and the middle part of the Neuralethopteris jongmansii macrofloristic subzone of the Western Europe (Langsettian).	en	Dernov, Vitaly (2022): Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine. Fossil Imprint 78 (2): 489-512, DOI: 10.37520/fi.2022.021, URL: http://dx.doi.org/10.37520/fi.2022.021
03925E10FFC1425BF186DFB8FAB5FF69.taxon	type_taxon	Ty p e s p e c i e s. Anthracoceratites deansi RAMSBOTTOM, 1970; by original designation.	en	Dernov, Vitaly (2022): Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine. Fossil Imprint 78 (2): 489-512, DOI: 10.37520/fi.2022.021, URL: http://dx.doi.org/10.37520/fi.2022.021
03925E10FFC1425BF186DFB8FAB5FF69.taxon	diagnosis	D i a g n o s i s. Genus of the family Anthracoceratidae with discoidal conch; umbilicus is closed. Ornamented with biconvex growth lines that form rather prominent ventrolateral projection. Suture line has a low median saddle; lobes have the tendency to become denticulate (after Ramsbottom 1970).	en	Dernov, Vitaly (2022): Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine. Fossil Imprint 78 (2): 489-512, DOI: 10.37520/fi.2022.021, URL: http://dx.doi.org/10.37520/fi.2022.021
03925E10FFC1425BF186DFB8FAB5FF69.taxon	description	S t r a t i g r a p h i c r a n g e. Yeadonian to Duckmantian / late early Bashkirian to terminal late Bashkirian.	en	Dernov, Vitaly (2022): Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine. Fossil Imprint 78 (2): 489-512, DOI: 10.37520/fi.2022.021, URL: http://dx.doi.org/10.37520/fi.2022.021
03925E10FFC1425BF287D98EFA84FA68.taxon	type_taxon	T y p e s p e c i e s. Cymoceras miseri MCCALEB, 1964; by original designation.	en	Dernov, Vitaly (2022): Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine. Fossil Imprint 78 (2): 489-512, DOI: 10.37520/fi.2022.021, URL: http://dx.doi.org/10.37520/fi.2022.021
03925E10FFC1425BF287D98EFA84FA68.taxon	diagnosis	D i a g n o s i s. Genus of the family Neodimorphoceratidae with extremely discoidal conch; umbilicus is closed. Ornamented with broad dichotomous biconvex transverse ribs, which form a ventral sinus and lateral projection. Suture line has a very wide ventral lobe with asymmetrical branches; flanks of median saddle curved (after McCaleb 1964).	en	Dernov, Vitaly (2022): Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine. Fossil Imprint 78 (2): 489-512, DOI: 10.37520/fi.2022.021, URL: http://dx.doi.org/10.37520/fi.2022.021
03925E10FFC1425BF287D98EFA84FA68.taxon	description	S t r a t i g r a p h i c r a n g e. Late Bashkirian.	en	Dernov, Vitaly (2022): Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine. Fossil Imprint 78 (2): 489-512, DOI: 10.37520/fi.2022.021, URL: http://dx.doi.org/10.37520/fi.2022.021
03925E10FFC1425BF1CDD8E2FDACFB0F.taxon	type_taxon	I n d e x s p e c i e s. Gastrioceras lupinum POPOV, 1979.	en	Dernov, Vitaly (2022): Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine. Fossil Imprint 78 (2): 489-512, DOI: 10.37520/fi.2022.021, URL: http://dx.doi.org/10.37520/fi.2022.021
03925E10FFC1425BF1CDD8E2FDACFB0F.taxon	description	S t r a t i g r a p h i c r a n g e. From the G 4 limestone layer to the base of the I 1 limestone bed (Belaya Kalitva Formation). A g e a n d c o r r e l a t i o n. Layers with Gastrioceras lupinum correspond to the upper part of the GastriocerasBranneroceras Genozone, upper part of the communis Zone and lower modiolaris Subzone (late Langsettian) of the Western Europe and the uppermost part of the Neuralethopteris jongmansii and lower half of the Laveineopteris loshii macrofloristic subzones of Western Europe.	en	Dernov, Vitaly (2022): Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine. Fossil Imprint 78 (2): 489-512, DOI: 10.37520/fi.2022.021, URL: http://dx.doi.org/10.37520/fi.2022.021
03925E10FFC0425AF194DC32FAADF9AB.taxon	type_taxon	T y p e s p e c i e s. Melvilloceras sabinensis NASSICHUK, 1975; by original designation.	en	Dernov, Vitaly (2022): Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine. Fossil Imprint 78 (2): 489-512, DOI: 10.37520/fi.2022.021, URL: http://dx.doi.org/10.37520/fi.2022.021
03925E10FFC0425AF194DC32FAADF9AB.taxon	diagnosis	D i a g n o s i s. Genus of the family Surenitidae with discoidal to pachyconic conch with moderately involute and rather narrow umbilicus. The venter is narrowly rounded and flanks are broadly rounded or flattened. Ornamentation is delicately reticulate and with umbilical nodes on the early growth stages; sinuous growth lines more conspicuous than longitudinal lirae; four to six constrictions per whorl. The external suture is characterized by ventral prongs that are attenuate and are separated from one another by a secondary ventral saddle that is greater than half the height of the broadly rounded first lateral saddle. The first lateral lobe is broad and pointed with straight or slightly curved sides (after Nassichuk 1975).	en	Dernov, Vitaly (2022): Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine. Fossil Imprint 78 (2): 489-512, DOI: 10.37520/fi.2022.021, URL: http://dx.doi.org/10.37520/fi.2022.021
03925E10FFC0425AF194DC32FAADF9AB.taxon	description	S t r a t i g r a p h i c r a n g e. Late Bashkirian.	en	Dernov, Vitaly (2022): Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine. Fossil Imprint 78 (2): 489-512, DOI: 10.37520/fi.2022.021, URL: http://dx.doi.org/10.37520/fi.2022.021
03925E10FFC04259F22BDC4FFA4BFAA5.taxon	description	Text-fig. 8 1979 Lutuginoceras rotaii; Popov, p. 86, pl. XI, figs 1, 2, text-fig. 10 I. 2021 a Melvilloceras rotaii; Dernov, p. 13, text-fig. 1 A – O. H o l o t y p e. Specimen VSEGEI- 73 in the Russian Geological Research Institute (St. Petersburg, Russia); figured by Popov (1979) in pl. XI, figs 1 and 2. Ty p e l o c a l i t y a n d s t r a t i g r a p h i c h o r i z o n. Rus’ko-Orlovka on Krynka River (Donetsk Region, Ukraine); Mospyne Formation, G 4 limestone layer (late Bashkirian). D i a g n o s i s. Melvilloceras has a discoidal and subinvolute conch with narrow convex venter and weakly convex flanks covered with delicate concavo-convex growth lines; umbilical margin almost rectangular with small, sharp nodes. M a t e r i a l. 13 specimens with conch diameter between 7 and 32 mm from stratigraphic levels No. 2 – 6 of the Mospyne Formation. D e s c r i p t i o n. The largest available specimen IGSU- 7 / 8040 (Text-fig. 8 a, b) with diameter 32.1 mm is subinvolute (uw / dm = 0.19), thinly discoidal (ww / dm ~ 0.34) with a weakly compressed whorl profile (ww / wh ~ 0.73). The venter is strongly convex and narrow; flanks weakly convex and slightly converging towards the ventrolateral shoulder. The umbilical margin is almost rectangular. The umbilical wall is vertical and flattened. The surface of the conch is covered with frequent and clearly visible lamellar lines and delicate growth lines, forming a narrow, deep external sinus, high ventrolateral projection and shallow, wide lateral sinus. On the midflank the growth lines are spaced about 0.4 to 0.5 mm apart. The umbilical margin has sharp elongated nodes. Specimen IGSU- 7 / 468 is an almost fully limonitized specimen with a diameter of 23.4 mm (Text-fig. 8 g – i) and weakly compressed whorl profile (ww / wh = 0.91). The conch is thickly discoidal (ww / dm = 0.48) with narrow umbilicus (uw / dm = 0.18) and high aperture (WER = 2.14); the umbilical wall is flat and narrow; and the umbilical margin is almost rectangular. The venter is strongly convex; flanks are broad and very slightly convex. Ornamented with small, sharp hardly noticeable umbilical nodes. Specimen IGSU- 7 / 472 is a steinkern of 20.5 mm diameter (Text-fig. 8 c, d). The conch has a narrow umbilicus (uw / dm = 0.23); a flattened, narrow umbilical wall and almost rectangular umbilical margin. The venter is strongly convex and narrow; the flanks are slightly convex (nearly flattened) and ornamented with small, sharp umbilical nodes (one node per 1 mm of the umbilical margin). Four narrow concavoconvex constrictions with high ventrolateral projection and deep ventral sinus are prominent on the whorl. R e m a r k s. Melvilloceras rotaii differs from Melvilloceras sabinensis in the coarser umbilical nodes, which don’t disappear during ontogeny and absence of the longitudinal lirae. The conch form of the studied specimens differs from the single specimen of the type material, studied by Popov (holotype VSEGEI – 73): ww / dm = 0.60 at conch diameter 15 mm in the holotype in comparison with ww / dm = 0.48 at conch diameter 14 mm (specimen IGSU- 7 / 496). In addition, the specimens studied lack the longitudinal lirae noted by Popov (1979) in the original description. It is possible that longitudinal lirae are characteristic of young conchs; they may be absent on mature conchs (most of the specimens studied have a diameter of about 20 mm or more). The conch shape of the described specimens is more closely related to the species Melvilloceras sabinensis (ww / dm = 0.47 at 19.5 mm diameter in M. sabinensis and ww / dm = 0.47 at 19.7 mm diameter in M. rotaii). O c c u r r e n c e. Late Bashkirian, Mospyne Formation (shale 100 m below the G 1 2 limestone layer to the G 4 limestone layer; see Text-fig. 6); Donets Basin (Ukraine).	en	Dernov, Vitaly (2022): Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine. Fossil Imprint 78 (2): 489-512, DOI: 10.37520/fi.2022.021, URL: http://dx.doi.org/10.37520/fi.2022.021
03925E10FFC3425FF29ADFF7FF1BF8A6.taxon	type_taxon	T y p e s p e c i e s. Ammonites listeri SOWERBY, 1812; by subsequent designation (Foord and Crick 1897: 226; see also ICZN (1956): Opinion 420, p. 150).	en	Dernov, Vitaly (2022): Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine. Fossil Imprint 78 (2): 489-512, DOI: 10.37520/fi.2022.021, URL: http://dx.doi.org/10.37520/fi.2022.021
03925E10FFC3425FF29ADFF7FF1BF8A6.taxon	diagnosis	D i a g n o s i s. Genus of the family Gastrioceratidae with thickly discoidal, pachyconic and globular conch with moderate and wide umbilicus; umbilical shoulder nodose. Ornamentation ranging from simple transverse lirae to reticulate pattern in some species. Suture line with a high median saddle between the attenuated prongs of the ventral lobe; lateral lobe generally nearly symmetrical and becoming attenuated on mature specimens (after Mapes et al. 1997).	en	Dernov, Vitaly (2022): Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine. Fossil Imprint 78 (2): 489-512, DOI: 10.37520/fi.2022.021, URL: http://dx.doi.org/10.37520/fi.2022.021
03925E10FFC3425FF29ADFF7FF1BF8A6.taxon	description	S t r a t i g r a p h i c r a n g e. Late Bashkirian to early Moscovian.	en	Dernov, Vitaly (2022): Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine. Fossil Imprint 78 (2): 489-512, DOI: 10.37520/fi.2022.021, URL: http://dx.doi.org/10.37520/fi.2022.021
03925E10FFC5425EF1A8DD3CFAE8FE3B.taxon	description	Text-fig. 9 a – d	en	Dernov, Vitaly (2022): Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine. Fossil Imprint 78 (2): 489-512, DOI: 10.37520/fi.2022.021, URL: http://dx.doi.org/10.37520/fi.2022.021
03925E10FFC5425EF1A8DD3CFAE8FE3B.taxon	type_taxon	H o l o t y p e. Specimen BB. P 223. WB in the Deutsches Bergbau-Museum (Bochum, Germany); figured by Korn (2007: fig. 17 В).	en	Dernov, Vitaly (2022): Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine. Fossil Imprint 78 (2): 489-512, DOI: 10.37520/fi.2022.021, URL: http://dx.doi.org/10.37520/fi.2022.021
03925E10FFC5425EF1A8DD3CFAE8FE3B.taxon	description	Ty p e l o c a l i t y a n d s t r a t i g r a p h i c h o r i z o n. Hammertal, Plessbach pit (near Bochum-Stiepel, Rhenish Massif, Germany); marine horizon above Sarnsbank 2 coal seam, G 2 Zone (base of Langsettian).	en	Dernov, Vitaly (2022): Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine. Fossil Imprint 78 (2): 489-512, DOI: 10.37520/fi.2022.021, URL: http://dx.doi.org/10.37520/fi.2022.021
03925E10FFC5425EF1A8DD3CFAE8FE3B.taxon	diagnosis	D i a g n o s i s. Gastrioceras with thickly discoidal, almost pachyconic conch with convex venter, weakly convex flanks and moderate umbilicus covered with nodes. Flanks bearing lamellae; four weak concavo-convex constrictions are prominent on each whorl. M a t e r i a l. Six steinkerns of the very small conchs (dm = 5.5 – 8.5 mm) from stratigraphic levels 3 and 8 of the Mospyne Formation.	en	Dernov, Vitaly (2022): Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine. Fossil Imprint 78 (2): 489-512, DOI: 10.37520/fi.2022.021, URL: http://dx.doi.org/10.37520/fi.2022.021
03925E10FFC5425EF1A8DD3CFAE8FE3B.taxon	description	D e s c r i p t i o n. Specimen IGSU- 4 / 669 b (Textfig. 9 c, d) is an almost fully preserved steinkern of 8 mm diameter. The conch is thickly discoidal, almost pachyconic (ww / dm = 0.59) with moderate umbilicus (uw / dm = 0.36), moderately depressed (ww / wh = 1.80), semi-circular whorl profile and wide convex venter; ventrolateral shoulder is rounded; flanks are weakly convex; umbilical margin angular. Ornamentation with umbilical nodes and lateral lamellae, forming a narrow shallow sinus on the venter, a low projection on the ventrolateral shoulder and narrow shallow sinus on the flank. Four weak concavo-convex constrictions with high ventrolateral projection and very shallow ventral sinus are prominent on the whorl. The suture line is not preserved on the material studied. Specimen IGSU- 4 / 669 b (Text-fig. 9 a, b) is an almost fully preserved steinkern of 6.5 mm diameter. The conch is thickly discoidal (ww / dm = 0.51) with moderate umbilicus (uw / dm = 0.31), moderately depressed (ww / wh = 1.50), semi-circular whorl profile and wide convex venter; ventrolateral shoulder is rounded; flanks are weakly convex; umbilical margin angular; umbilical wall flattened and wide. Ornamentation with umbilical nodes and lateral lamellae, forming a narrow shallow sinus on the venter, a low projection on the ventrolateral shoulder and narrow shallow sinus on the flank. On the midflank the lamellae are spaced about 0.4 to 0.5 mm apart. Four weak concavoconvex constrictions with high ventrolateral projection and very shallow ventral sinus are prominent on the whorl. The suture line is not preserved on the material studied.	en	Dernov, Vitaly (2022): Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine. Fossil Imprint 78 (2): 489-512, DOI: 10.37520/fi.2022.021, URL: http://dx.doi.org/10.37520/fi.2022.021
03925E10FFC5425EF1A8DD3CFAE8FE3B.taxon	discussion	R e m a r k s. Gastrioceras angustum differs from G. listeri in the lack of spiral lines between the umbilical nodes, less coarse umbilical nodes, less depressed whorl profile, and from G. circumnodosum in the much lower number of umbilical nodes. O c c u r r e n c e. Basal part of the Westphalian of Germany, Great Britain, and south Portugal.	en	Dernov, Vitaly (2022): Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine. Fossil Imprint 78 (2): 489-512, DOI: 10.37520/fi.2022.021, URL: http://dx.doi.org/10.37520/fi.2022.021
03925E10FFC4425DF2F8DBDFFDE6FDCB.taxon	description	Text-fig. 9 e – i	en	Dernov, Vitaly (2022): Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine. Fossil Imprint 78 (2): 489-512, DOI: 10.37520/fi.2022.021, URL: http://dx.doi.org/10.37520/fi.2022.021
03925E10FFC4425DF2F8DBDFFDE6FDCB.taxon	type_taxon	H o l o t y p e. Specimen VSEGEI- 3223 in the Russian Geological Research Institute (St. Petersburg, Russia); figured by Popov (1979: pl. X, fig. 9).	en	Dernov, Vitaly (2022): Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine. Fossil Imprint 78 (2): 489-512, DOI: 10.37520/fi.2022.021, URL: http://dx.doi.org/10.37520/fi.2022.021
03925E10FFC4425DF2F8DBDFFDE6FDCB.taxon	description	Ty p e l o c a l i t y a n d s t r a t i g r a p h i c h o r i z o n. Sorocha Ravine, Donets Basin, Ukraine; Smolyanynivka or Belaya Kalitva Formation (Н 5 or І 1 limestone layer; late Bashkirian).	en	Dernov, Vitaly (2022): Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine. Fossil Imprint 78 (2): 489-512, DOI: 10.37520/fi.2022.021, URL: http://dx.doi.org/10.37520/fi.2022.021
03925E10FFC4425DF2F8DBDFFDE6FDCB.taxon	diagnosis	D i a g n o s i s. Gastrioceras with involute pachyconic conch with moderately depressed whorl profile, strongly convex venter, slightly convex flanks and very narrow and moderate umbilicus covered with small sharp nodes. Flanks bearing thin concavo-convex ribs; three constrictions are prominent on each whorl.	en	Dernov, Vitaly (2022): Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine. Fossil Imprint 78 (2): 489-512, DOI: 10.37520/fi.2022.021, URL: http://dx.doi.org/10.37520/fi.2022.021
03925E10FFC4425DF2F8DBDFFDE6FDCB.taxon	materials_examined	M a t e r i a l. 11 fragments of steinkerns and conch impressions from stratigraphic level No. 8 in the upper part of the Mospyne Formation.	en	Dernov, Vitaly (2022): Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine. Fossil Imprint 78 (2): 489-512, DOI: 10.37520/fi.2022.021, URL: http://dx.doi.org/10.37520/fi.2022.021
03925E10FFC4425DF2F8DBDFFDE6FDCB.taxon	description	D e s c r i p t i o n. The most well-preserved specimen IGSU- 4 / 687 (Text-fig. 9 e) is pachyconic (ww / dm = 0.70 at conch diameter 9.4 mm) with moderate umbilicus (uw / dm = 0.34) and convex venter. The flanks are almost flat and weakly converge towards the ventrolateral shoulder. The umbilical margin is rectangular; the umbilical wall is vertical. The whorl profile is moderately depressed (ww / wh = 1.47 at conch diameter 9.4 mm and 1.60 at conch diameter 30.0 mm). The surface of the conch is covered with small sharp umbilical nodes and thin transverse ribs, forming a shallow external sinus, a low ventrolateral projection and a very shallow, wide lateral sinus. Three prominent constrictions are present on each whorl.	en	Dernov, Vitaly (2022): Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine. Fossil Imprint 78 (2): 489-512, DOI: 10.37520/fi.2022.021, URL: http://dx.doi.org/10.37520/fi.2022.021
03925E10FFC4425DF2F8DBDFFDE6FDCB.taxon	discussion	R e m a r k s. Gastrioceras lupinum differs from Gastrioceras araium and G. magoffinense in the coarser ornamentation. Gastrioceras lupinum is distinguished from G. formosum by the conch form (ww / dm = 0.53 at conch diameter 30 mm in the Gastrioceras lupinum holotype but 0.86 at conch diameter 30 mm in G. formosum), the narrower whorl profile (ww / wh = 1.60 at conch diameter 30 mm in Gastrioceras lupinum holotype but 2.22 in G. formosum) and the presence of lateral ribs in Gastrioceras lupinum. O c c u r r e n c e. Late Bashkirian, upper part of the Mospyne Formation to basal layer of the Belaya Kalitva Formation; Donets Basin (Ukraine).	en	Dernov, Vitaly (2022): Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine. Fossil Imprint 78 (2): 489-512, DOI: 10.37520/fi.2022.021, URL: http://dx.doi.org/10.37520/fi.2022.021
03925E10FFC7425DF191D8EEFD86F78D.taxon	description	Text-fig. 9 j, k	en	Dernov, Vitaly (2022): Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine. Fossil Imprint 78 (2): 489-512, DOI: 10.37520/fi.2022.021, URL: http://dx.doi.org/10.37520/fi.2022.021
03925E10FFC7425DF191D8EEFD86F78D.taxon	type_taxon	H o l o t y p e. Specimen VSEGEI- 69 in the Russian Geological Research Institute (St. Petersburg, Russia); figured by Popov (1979: pl. XI, fig. 3).	en	Dernov, Vitaly (2022): Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine. Fossil Imprint 78 (2): 489-512, DOI: 10.37520/fi.2022.021, URL: http://dx.doi.org/10.37520/fi.2022.021
03925E10FFC7425DF191D8EEFD86F78D.taxon	description	Ty p e l o c a l i t y a n d s t r a t i g r a p h i c h o r i z o n. Zapovidka Ravine near Kuteynikove, Donetsk Region, Ukraine; the G 3 or G 4 limestone layer of the Mospyne Formation.	en	Dernov, Vitaly (2022): Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine. Fossil Imprint 78 (2): 489-512, DOI: 10.37520/fi.2022.021, URL: http://dx.doi.org/10.37520/fi.2022.021
03925E10FFC7425DF191D8EEFD86F78D.taxon	diagnosis	D i a g n o s i s. Gastrioceras with pachyconic conch with weakly compressed whorl profile and moderate umbilicus; ornamentation consisting of concavo-convex growth lines and sharp elongate umbilical nodes.	en	Dernov, Vitaly (2022): Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine. Fossil Imprint 78 (2): 489-512, DOI: 10.37520/fi.2022.021, URL: http://dx.doi.org/10.37520/fi.2022.021
03925E10FFC7425DF191D8EEFD86F78D.taxon	materials_examined	M a t e r i a l. Three steinkerns from stratigraphic levels 3 and 5 a of the Mospyne Formation.	en	Dernov, Vitaly (2022): Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine. Fossil Imprint 78 (2): 489-512, DOI: 10.37520/fi.2022.021, URL: http://dx.doi.org/10.37520/fi.2022.021
03925E10FFC7425DF191D8EEFD86F78D.taxon	description	D e s c r i p t i o n. Specimen IGSU- 7 / 3254 is an almost fully preserved steinkern of 9.1 mm diameter with convex venter; it merges imperceptibly into almost flat flanks, which weakly converge onto the ventrolateral shoulder; the umbilical margin is rectangular and umbiblicus is moderate (uw / dm = 0.32). Ornamentation consisting of frequent clearly visible growth lines. These form a shallow external sinus and a low projection on the ventrolateral shoulder and very shallow, broad sinus on the flank. The surface of the umbilical margin is covered with sharp nodes, spaced approximately 0.35 to 0.40 mm apart at conch diameter 9.1 mm. Two weak concavo-convex constrictions with high ventrolateral projection and very shallow ventral sinus are prominent on whorl. The suture line is not preserved.	en	Dernov, Vitaly (2022): Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine. Fossil Imprint 78 (2): 489-512, DOI: 10.37520/fi.2022.021, URL: http://dx.doi.org/10.37520/fi.2022.021
03925E10FFC7425DF191D8EEFD86F78D.taxon	discussion	R e m a r k s. The described species differs from other representatives of the genus in its more delicate ornamentation and the narrower umbilicus. Gastrioceras kutejnikovense is very similar to Gastrioceras magoffinense (early Atokan; Kentucky, USA). As the suture line of Gastrioceras kutejnikovense is not known, I cannot at present confidently compare these taxa; the conch morphology of these species is very similar. O c c u r r e n c e. Late Bashkirian, Mospyne Formation (sandstone and shale bellow the G 1 2 limestone layer to the G 4 limestone layer); Donets Basin (Ukraine).	en	Dernov, Vitaly (2022): Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine. Fossil Imprint 78 (2): 489-512, DOI: 10.37520/fi.2022.021, URL: http://dx.doi.org/10.37520/fi.2022.021
03925E10FFC7425CF2C7DFF2FE00FE26.taxon	type_taxon	T y p e s p e c i e s. Glyphioceras carinatum FRECH, 1899; by original designation.	en	Dernov, Vitaly (2022): Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine. Fossil Imprint 78 (2): 489-512, DOI: 10.37520/fi.2022.021, URL: http://dx.doi.org/10.37520/fi.2022.021
03925E10FFC7425CF2C7DFF2FE00FE26.taxon	diagnosis	D i a g n o s i s. Genus of the family Gastrioceratidae with discoidal and pachyconic conch and moderately wide umbilicus. Venter is narrowly rounded. Ornamentation of inner whorls consists of small umbilical nodes; some species with very fine spiral ornamentation. Suture line with moderately wide, Y-shaped ventral lobe and moderately high median saddle; prongs of ventral lobe symmetric (after Patteisky 1965, Korn 1997).	en	Dernov, Vitaly (2022): Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine. Fossil Imprint 78 (2): 489-512, DOI: 10.37520/fi.2022.021, URL: http://dx.doi.org/10.37520/fi.2022.021
03925E10FFC7425CF2C7DFF2FE00FE26.taxon	description	S t r a t i g r a p h i c r a n g e. Yeadonian – Langsettian / late early and early late Bashkirian.	en	Dernov, Vitaly (2022): Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine. Fossil Imprint 78 (2): 489-512, DOI: 10.37520/fi.2022.021, URL: http://dx.doi.org/10.37520/fi.2022.021
03925E10FFC6425CF18EDC37FC78FA30.taxon	type_taxon	T y p e s p e c i e s. Bisatoceras primum MILLER et OWEN, 1937; by original designation.	en	Dernov, Vitaly (2022): Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine. Fossil Imprint 78 (2): 489-512, DOI: 10.37520/fi.2022.021, URL: http://dx.doi.org/10.37520/fi.2022.021
03925E10FFC6425CF18EDC37FC78FA30.taxon	diagnosis	D i a g n o s i s. Genus of the family Bisatoceratidae with subdiscoidal conch and very narrow or closed umbilicus. Ornamentation of transverse growth lamellae which form ventral and lateral sinuses and ventrolateral and dorsolateral salients. Constrictions present in early ontogenetic stages, but absent at maturity. Prongs of the ventral lobe are accuminate and inflatted and are broader than the first lateral saddle. The secondary ventral saddle is nearly as high as the rounded lateral saddle and is narrow and accuminate and the umbilical lobe is shallow and rounded (after Nassichuk 1975).	en	Dernov, Vitaly (2022): Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine. Fossil Imprint 78 (2): 489-512, DOI: 10.37520/fi.2022.021, URL: http://dx.doi.org/10.37520/fi.2022.021
03925E10FFC6425CF18EDC37FC78FA30.taxon	description	S t r a t i g r a p h i c r a n g e. Late Serpukhovian to Gzhelian.	en	Dernov, Vitaly (2022): Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine. Fossil Imprint 78 (2): 489-512, DOI: 10.37520/fi.2022.021, URL: http://dx.doi.org/10.37520/fi.2022.021
03925E10FFD94243F199DCC8FBC5F941.taxon	type_taxon	T y p e s p e c i e s. Neoglyphioceras bellilineatum MILLER et OWEN, 1939; by original designation.	en	Dernov, Vitaly (2022): Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine. Fossil Imprint 78 (2): 489-512, DOI: 10.37520/fi.2022.021, URL: http://dx.doi.org/10.37520/fi.2022.021
03925E10FFD94243F199DCC8FBC5F941.taxon	diagnosis	D i a g n o s i s. Genus of the family Bisatoceratidae with pachyconic conch and moderately wide or rather narrow umbilicus. Ornamented with prominent longitudinal lirae and weak growth lines; umbilical nodes may be present. Suture line with an almost straight-sided bifid ventral lobe and on either side of it a rounded U-shaped asymmetrical first lateral saddle, a sharply pointed somewhat tongueshaped first lateral lobe, a rather low broad asymmetrical rounded second lateral saddle, and a shallow broad pointed lobe on the umbilical wall (after Miller and Owen 1939, Miller and Furnish 1940).	en	Dernov, Vitaly (2022): Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine. Fossil Imprint 78 (2): 489-512, DOI: 10.37520/fi.2022.021, URL: http://dx.doi.org/10.37520/fi.2022.021
03925E10FFD94243F199DCC8FBC5F941.taxon	description	S t r a t i g r a p h i c r a n g e.? Late Bashkirian to Kasimovian or Gzhelian.	en	Dernov, Vitaly (2022): Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine. Fossil Imprint 78 (2): 489-512, DOI: 10.37520/fi.2022.021, URL: http://dx.doi.org/10.37520/fi.2022.021
03925E10FFD84242F1E8D9B8FB7DFCC6.taxon	type_taxon	T y p e s p e c i e s. Gastrioceras branneri SMITH, 1896; by original designation.	en	Dernov, Vitaly (2022): Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine. Fossil Imprint 78 (2): 489-512, DOI: 10.37520/fi.2022.021, URL: http://dx.doi.org/10.37520/fi.2022.021
03925E10FFD84242F1E8D9B8FB7DFCC6.taxon	diagnosis	D i a g n o s i s. Genus of the family Schistoceratidae with subdiscoidal, evolute conch with moderate to wide umbilicus. Ornamented with prominent ribs on or adjacent to the umbilical shoulder. In widely umbilicate forms the ribs are long and more strongly developed than in the narrowly umbilicate forms; these ribs decrease in size and robustness until they become more like nodes. Ventral region ornamented by prominent sinuous transverse lirae with wider interspaces, forming rounded prominent ventral and lateral sinuses and corresponding salients between, crossed by finer longitudinal lirae, giving a cancellate appearance and commonly beaded where two sets of lirae cross. Suture line with narrow, inflated and attenuate ventral prongs that are separated from each other by a relatively broad secondary ventral saddle; the ventral saddle is more than half the height of the first lateral saddle. The first lateral saddle is broad and evenly rounded and the first lateral lobe is comparatively narrow, asymmetric and attenuate (after Gordon 1965, McCaleb 1968, Nassichuk 1975).	en	Dernov, Vitaly (2022): Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine. Fossil Imprint 78 (2): 489-512, DOI: 10.37520/fi.2022.021, URL: http://dx.doi.org/10.37520/fi.2022.021
03925E10FFD84242F1E8D9B8FB7DFCC6.taxon	discussion	R e m a r k s. Branneroceras differs from Inzeroceras RUZHENCEV, 1974 by the more pronounced relief on the umbilical nodes, narrower ventral lobe and low median saddle; in addition, the umbilical lobe of Inzeroceras is displaced to the lateral face. Branneroceras is distinguished from Retites in long and narrow (longer than half the height of the first lateral saddle) ventral prongs. Branneroceras differs from Diadoloceras by the lack of triangular coiling of early whorls.	en	Dernov, Vitaly (2022): Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine. Fossil Imprint 78 (2): 489-512, DOI: 10.37520/fi.2022.021, URL: http://dx.doi.org/10.37520/fi.2022.021
03925E10FFD84242F1E8D9B8FB7DFCC6.taxon	description	S t r a t i g r a p h i c r a n g e. Late Bashkirian (Gastrioceras-Branneroceras Genozone).	en	Dernov, Vitaly (2022): Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine. Fossil Imprint 78 (2): 489-512, DOI: 10.37520/fi.2022.021, URL: http://dx.doi.org/10.37520/fi.2022.021
03925E10FFD84240F54ED9D3FE8BF966.taxon	description	Text-fig. 12 a – u	en	Dernov, Vitaly (2022): Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine. Fossil Imprint 78 (2): 489-512, DOI: 10.37520/fi.2022.021, URL: http://dx.doi.org/10.37520/fi.2022.021
03925E10FFD84240F54ED9D3FE8BF966.taxon	materials_examined	M a t e r i a l. 22 specimens between 13 and 40 mm conch diameter from stratigraphic levels No. 3, 5 b and 6 of the Mospyne Formation.	en	Dernov, Vitaly (2022): Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine. Fossil Imprint 78 (2): 489-512, DOI: 10.37520/fi.2022.021, URL: http://dx.doi.org/10.37520/fi.2022.021
03925E10FFD84240F54ED9D3FE8BF966.taxon	description	D e s c r i p t i o n. Specimen IGSU- 4 / 315 is an almost fully limonitized specimen with 26.4 mm diameter (Textfig. 13 a – c). The conch is thickly discoidal (ww / dm = 0.52) with wide umbilicus (uw / dm = 0.44) and moderate coiling rate (WER = 1.96) and moderately depressed (ww / wh = 1.52) whorl profile; the venter is broad and weakly convex; ventrolateral shoulder is broadly rounded. The flanks are weakly convex, they slightly converge towards the ventrolateral shoulder. The umbilical margin is narrowly rounded and almost rectangular. The umbilical wall is flat and at an angle of 45 º to the plane of symmetry of the conch. The surface of the conch is covered with weak elongated umbilical nodes (~ 35 on the whorl), growth lines and welldeveloped lirae on the venter and ventrolateral shoulders. The growth lines form a shallow, broad sinus on the venter and a low projection on the ventrolateral shoulder; they are straight on the flanks. On the umbilical margin the transverse ribs are spaced about 0.60 to 0.75 mm apart. The number of lirae on the ventrolateral shoulder is two per 1 mm; on the midflank, the growth lines are spaced about 0.15 mm apart. Three weak concavo-convex constrictions with a low ventrolateral projection and a very shallow ventral sinus are prominent on the whorl. Specimen IGSU- 4 / 338 (Text-fig. 13 d, e) is discoidal (ww / dm = 0.45) with a wide umbilicus (uw / dm = 0.46) and a weakly depressed whorl profile (ww / wh = 1.33) at 27.3 mm diameter. The venter is broad and weakly convex. The ventrolateral shoulder is broadly rounded. The flanks are weakly convex, they converge slightly towards the ventrolateral shoulder. The umbilical margin is narrowly rounded and almost rectangular. The umbilical wall is flat and at a 45 º angle to the plane of symmetry of the conch. The surface of the conch is covered with weak elongated umbilical nodes and growth lines; the lirae on the venter and ventrolateral shoulders are not preserved. Two weak concavo-convex constrictions with a low ventrolateral projection and a very shallow ventral sinus are prominent on the whorl. The suture line of specimen IGSU- 4 / 725 (Text-fig. 12 n, o, q) has a broad, sharply pointed lateral prong of the external lobe, a low, narrow ventrolateral saddle and V-shaped rectangular pointed adventive lobe. The suture line is not preserved on the umbilical wall and dorsum.	en	Dernov, Vitaly (2022): Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine. Fossil Imprint 78 (2): 489-512, DOI: 10.37520/fi.2022.021, URL: http://dx.doi.org/10.37520/fi.2022.021
03925E10FFD84240F54ED9D3FE8BF966.taxon	discussion	R e m a r k s. Branneroceras sp. A differs from Branneroceras branneri (SMITH, 1896) in a wider ventrolateral saddle, a narrower umbilicus (uw / dm = 0.43 at 15.5 mm diamener in Branneroceras sp. A and uw / dm = 0.54 at 15.7 mm diamener in Branneroceras branneri) and in weak constrictions, which are absent in Branneroceras branneri. Branneroceras sp. A differs from Branneroceras nicholasi NASSICHUK in a broader umbilicus (uw / dm = 0.55 at 18.0 mm diameter vs. uw / dm = 0.33 at 18.0 mm diameter, respectively) and a low whorl profile. The suture lines of Branneroceras sp. A and Branneroceras nicholasi NASSICHUK are similar, but the adventive lobe of Br. sp. A is more pointed. The morphology of the conch and weak umbilical nodes make Branneroceras sp. A similar to Inzeroceras bellum RUZHENCEV, 1974; the differences between Branneroceras sp. A and Inzeroceras bellum are in the narrower ventrolateral saddle and Y-like adventive lobe in Inzeroceras bellum.	en	Dernov, Vitaly (2022): Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine. Fossil Imprint 78 (2): 489-512, DOI: 10.37520/fi.2022.021, URL: http://dx.doi.org/10.37520/fi.2022.021
03925E10FFD84240F54ED9D3FE8BF966.taxon	distribution	O c c u r r e n c e. Late Bashkirian, Mospyne Formation; Donets Basin (Ukraine).	en	Dernov, Vitaly (2022): Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine. Fossil Imprint 78 (2): 489-512, DOI: 10.37520/fi.2022.021, URL: http://dx.doi.org/10.37520/fi.2022.021
03925E10FFDA4240F07BDD7CFBDDF887.taxon	description	Text-fig. 13 v – z	en	Dernov, Vitaly (2022): Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine. Fossil Imprint 78 (2): 489-512, DOI: 10.37520/fi.2022.021, URL: http://dx.doi.org/10.37520/fi.2022.021
03925E10FFDA4240F07BDD7CFBDDF887.taxon	materials_examined	M a t e r i a l. Three specimens of small conch and several fragments of conch from stratigraphic level No. 5 a of the Mospyne Formation.	en	Dernov, Vitaly (2022): Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine. Fossil Imprint 78 (2): 489-512, DOI: 10.37520/fi.2022.021, URL: http://dx.doi.org/10.37520/fi.2022.021
03925E10FFDA4240F07BDD7CFBDDF887.taxon	description	D e s c r i p t i o n. Specimen IGSU- 4 / 626 is an almost fully limonitized specimen with 13.7 mm diameter (Text-fig. 13 v, w). The conch is discoidal (ww / dm = 0.46) with wide umbilicus (uw / dm = 0.50) and moderately depressed whorl profile (ww / wh = 1.85); the venter is broad and weakly convex; the ventrolateral shoulder is broadly rounded. The flanks are weakly convex and narrow, they slightly converge with the ventrolateral shoulder. The umbilical margin is narrowly rounded. The umbilical wall is weakly convex and at a 45 º angle to the plane of symmetry of the conch. The surface of the conch is covered with weak elongated umbilical nodes and growth lines and well-developed lirae on the venter and ventrolateral shoulders. The growth lines form a shallow, broad sinus on the venter, a low projection on the ventrolateral shoulder and a broad shallow sinus on the flanks. On the umbilical margin, the growth lines are spaced about 0.15 to 0.20 mm apart. There are three or four lirae per mm on the ventrolateral shoulder. Three weak concavoconvex constrictions with a high ventrolateral projection and a very shallow ventral sinus are prominent on the whorl. Specimen IGSU- 4 / 3984 а (Text-fig. 13 x, y) is discoidal (ww / dm = 0.45) with a wide umbilicus (uw / dm = 0.53) and a moderately depressed whorl profile (ww / wh = 1.87) at 12.9 mm diameter. The venter is broad and weakly convex. The ventrolateral shoulder is broadly rounded. The flanks are narrow and weakly convex, they slightly converge onto the ventrolateral shoulder. The umbilical margin is narrowly rounded. The umbilical wall is weakly convex and at an angle of 45 º to the plane of symmetry of the conch. The surface of the conch is covered with elongated umbilical nodes and growth lines; lirae on the venter and ventrolateral shoulders are not preserved. Three weak concavo-convex constrictions with a high ventrolateral projection and a very shallow ventral sinus are prominent on the whorl.	en	Dernov, Vitaly (2022): Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine. Fossil Imprint 78 (2): 489-512, DOI: 10.37520/fi.2022.021, URL: http://dx.doi.org/10.37520/fi.2022.021
03925E10FFDA4240F07BDD7CFBDDF887.taxon	discussion	R e m a r k s. Branneroceras sp. B differs from Branneroceras branneri (SMITH, 1896) in the weak constrictions, which are absent in Branneroceras branneri. Branneroceras sp. B is distinguished from B. hillsi Nassichuk by the less elongated umbilical nodes. Branneroceras sp. B differs from Branneroceras nicholasi Nassichuk in the more depressed whorl profile, less frequent constrictions and a wider umbilicus. Branneroceras sp. B differs from Branneroceras sp. A by the greater relief on the umbilical nodes and a more depressed whorl profile.	en	Dernov, Vitaly (2022): Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine. Fossil Imprint 78 (2): 489-512, DOI: 10.37520/fi.2022.021, URL: http://dx.doi.org/10.37520/fi.2022.021
03925E10FFDA4240F07BDD7CFBDDF887.taxon	distribution	O c c u r r e n c e. Late Bashkirian, Mospyne Formation, Donets Basin (Ukraine).	en	Dernov, Vitaly (2022): Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine. Fossil Imprint 78 (2): 489-512, DOI: 10.37520/fi.2022.021, URL: http://dx.doi.org/10.37520/fi.2022.021
