taxonID	type	format	identifier	references	title	description	created	creator	contributor	publisher	audience	source	license	rightsHolder	datasetID
466F6C33625EFFB6968547EAFBB033E6.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/4951754/files/figure.png	http://doi.org/10.5281/zenodo.4951754	FIGURE 3. 1–12. Pseudomonticlarella varia Smirnova. 1–4. PMO 227.416, seep 13, dorsal, ventral, lateral, and anterior views. Specimen serially sectioned (Figure 4). 5–8. PMO 227.419, seep 7, dorsal, ventral, lateral, and anterior views. 9–12. PMO 227.418, seep 13, dorsal, ventral, lateral, and anterior views. 13–32. Ptilorhynchia mclachlani sp. nov. 13–16. PMO 224.876, seep 9, dorsal, ventral, lateral, and anterior views. 17–20, PMO 224.879, seep 9, dorsal, ventral, lateral, and anterior views. Specimen serially sectioned (Figure 5B). 21–24. PMO 227.431, seep 9, dorsal, ventral, lateral, and anterior views. Specimen serially sectioned (Figure 5A). 25–28. PMO 224.871, seep 9, dorsal, ventral, lateral, and anterior views. 29–32. Holotype, PMO 224.882, seep 9, dorsal, ventral, lateral, and anterior views. Dotted line delimits photographs at the same magnification. Scale bars = 1 cm.	FIGURE 3. 1–12. Pseudomonticlarella varia Smirnova. 1–4. PMO 227.416, seep 13, dorsal, ventral, lateral, and anterior views. Specimen serially sectioned (Figure 4). 5–8. PMO 227.419, seep 7, dorsal, ventral, lateral, and anterior views. 9–12. PMO 227.418, seep 13, dorsal, ventral, lateral, and anterior views. 13–32. Ptilorhynchia mclachlani sp. nov. 13–16. PMO 224.876, seep 9, dorsal, ventral, lateral, and anterior views. 17–20, PMO 224.879, seep 9, dorsal, ventral, lateral, and anterior views. Specimen serially sectioned (Figure 5B). 21–24. PMO 227.431, seep 9, dorsal, ventral, lateral, and anterior views. Specimen serially sectioned (Figure 5A). 25–28. PMO 224.871, seep 9, dorsal, ventral, lateral, and anterior views. 29–32. Holotype, PMO 224.882, seep 9, dorsal, ventral, lateral, and anterior views. Dotted line delimits photographs at the same magnification. Scale bars = 1 cm.	2014-11-19	Sandy, Michael R.;Hryniewicz, Krzysztof;Hammer, Øyvind;Nakrem, Hans Arne;Little, Crispin T. S.		Zenodo	biologists	Sandy, Michael R.;Hryniewicz, Krzysztof;Hammer, Øyvind;Nakrem, Hans Arne;Little, Crispin T. S.			
466F6C33625EFFB6968547EAFBB033E6.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/4951758/files/figure.png	http://doi.org/10.5281/zenodo.4951758	FIGURE 4. Transverse serial sections of Pseudomonticlarella varia Smirnova, seep 13, PMO 227.416. Sections 0.4–1.1 mm given at higher magnification below dotted black line. Serial sections prepared perpendicular to maximum length of the specimen, numbering of sections starts at 0.0 mm the initial section through the specimen. Dimensions of sectioned specimen: L 7.0+; W 8.1; T 4.1 mm (+ = dimension damaged/specimen broken in that direction). Scale bars = 1 mm.	FIGURE 4. Transverse serial sections of Pseudomonticlarella varia Smirnova, seep 13, PMO 227.416. Sections 0.4–1.1 mm given at higher magnification below dotted black line. Serial sections prepared perpendicular to maximum length of the specimen, numbering of sections starts at 0.0 mm the initial section through the specimen. Dimensions of sectioned specimen: L 7.0+; W 8.1; T 4.1 mm (+ = dimension damaged/specimen broken in that direction). Scale bars = 1 mm.	2014-11-19	Sandy, Michael R.;Hryniewicz, Krzysztof;Hammer, Øyvind;Nakrem, Hans Arne;Little, Crispin T. S.		Zenodo	biologists	Sandy, Michael R.;Hryniewicz, Krzysztof;Hammer, Øyvind;Nakrem, Hans Arne;Little, Crispin T. S.			
466F6C336251FFB396854766FBEE3486.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/4951754/files/figure.png	http://doi.org/10.5281/zenodo.4951754	FIGURE 3. 1–12. Pseudomonticlarella varia Smirnova. 1–4. PMO 227.416, seep 13, dorsal, ventral, lateral, and anterior views. Specimen serially sectioned (Figure 4). 5–8. PMO 227.419, seep 7, dorsal, ventral, lateral, and anterior views. 9–12. PMO 227.418, seep 13, dorsal, ventral, lateral, and anterior views. 13–32. Ptilorhynchia mclachlani sp. nov. 13–16. PMO 224.876, seep 9, dorsal, ventral, lateral, and anterior views. 17–20, PMO 224.879, seep 9, dorsal, ventral, lateral, and anterior views. Specimen serially sectioned (Figure 5B). 21–24. PMO 227.431, seep 9, dorsal, ventral, lateral, and anterior views. Specimen serially sectioned (Figure 5A). 25–28. PMO 224.871, seep 9, dorsal, ventral, lateral, and anterior views. 29–32. Holotype, PMO 224.882, seep 9, dorsal, ventral, lateral, and anterior views. Dotted line delimits photographs at the same magnification. Scale bars = 1 cm.	FIGURE 3. 1–12. Pseudomonticlarella varia Smirnova. 1–4. PMO 227.416, seep 13, dorsal, ventral, lateral, and anterior views. Specimen serially sectioned (Figure 4). 5–8. PMO 227.419, seep 7, dorsal, ventral, lateral, and anterior views. 9–12. PMO 227.418, seep 13, dorsal, ventral, lateral, and anterior views. 13–32. Ptilorhynchia mclachlani sp. nov. 13–16. PMO 224.876, seep 9, dorsal, ventral, lateral, and anterior views. 17–20, PMO 224.879, seep 9, dorsal, ventral, lateral, and anterior views. Specimen serially sectioned (Figure 5B). 21–24. PMO 227.431, seep 9, dorsal, ventral, lateral, and anterior views. Specimen serially sectioned (Figure 5A). 25–28. PMO 224.871, seep 9, dorsal, ventral, lateral, and anterior views. 29–32. Holotype, PMO 224.882, seep 9, dorsal, ventral, lateral, and anterior views. Dotted line delimits photographs at the same magnification. Scale bars = 1 cm.	2014-11-19	Sandy, Michael R.;Hryniewicz, Krzysztof;Hammer, Øyvind;Nakrem, Hans Arne;Little, Crispin T. S.		Zenodo	biologists	Sandy, Michael R.;Hryniewicz, Krzysztof;Hammer, Øyvind;Nakrem, Hans Arne;Little, Crispin T. S.			
466F6C336251FFB396854766FBEE3486.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/4951764/files/figure.png	http://doi.org/10.5281/zenodo.4951764	FIGURE 5. A and B, transverse serial sections from two specimens of Ptilorhynchia mclachlani sp. nov., seep 9. A) Specimen PMO 227.431, sections above third dotted line. Dotted lines delimit groups of sections drawn at the same magnification. Dimensions of specimen: L 15.3+; W 18.3; T 9.8 mm. Serial sections prepared perpendicular to maximum length of specimen; numbering of sections starts at 0.0 mm, the initial section through the specimen. B) Specimen PMO 224.879, sections below third dotted line. Dimensions of sectioned specimen: L 12.9; W 12.8+; T 9.0 mm. Serial sections prepared perpendicular to length of dorsal valve; numbering of sections starts at 0.0 mm, the initial section through the specimen. Scale bars = 1 mm.	FIGURE 5. A and B, transverse serial sections from two specimens of Ptilorhynchia mclachlani sp. nov., seep 9. A) Specimen PMO 227.431, sections above third dotted line. Dotted lines delimit groups of sections drawn at the same magnification. Dimensions of specimen: L 15.3+; W 18.3; T 9.8 mm. Serial sections prepared perpendicular to maximum length of specimen; numbering of sections starts at 0.0 mm, the initial section through the specimen. B) Specimen PMO 224.879, sections below third dotted line. Dimensions of sectioned specimen: L 12.9; W 12.8+; T 9.0 mm. Serial sections prepared perpendicular to length of dorsal valve; numbering of sections starts at 0.0 mm, the initial section through the specimen. Scale bars = 1 mm.	2014-11-19	Sandy, Michael R.;Hryniewicz, Krzysztof;Hammer, Øyvind;Nakrem, Hans Arne;Little, Crispin T. S.		Zenodo	biologists	Sandy, Michael R.;Hryniewicz, Krzysztof;Hammer, Øyvind;Nakrem, Hans Arne;Little, Crispin T. S.			
466F6C336251FFB396854766FBEE3486.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/4951772/files/figure.png	http://doi.org/10.5281/zenodo.4951772	FIGURE 6. 1–4. Ptilorhynchia aff. plumasensis Crickmay, USGS Mesozoic Locality 32032 (=80Ace119), Karluk Quadrangle, Alaska, Shelikof Formation, Callovian, Middle Jurassic, dorsal, ventral, lateral, and anterior views. 5–8. Ptilorhynchia jeletzkyi Owen, USGS Mesozoic locality 14496, co–occurs with Buchia mosquensis (von Buch), probably Naknek series, Kimmeridgian–Tithonian(?), Upper Jurassic, McCarthy Quadrangle, Alaska. Collector, Fred H. Moffit, 1928. Dorsal, ventral, lateral, and anterior views.9–17. Ptilorhynchia obscuricostata Dagys. 9–12. PMO 224.880, seep 9, dorsal, ventral, lateral, and anterior views. 13–17. PMO 224.881, seep 9, dorsal, ventral, lateral, anterior and posterior views. Scale bar = 1 cm.	FIGURE 6. 1–4. Ptilorhynchia aff. plumasensis Crickmay, USGS Mesozoic Locality 32032 (=80Ace119), Karluk Quadrangle, Alaska, Shelikof Formation, Callovian, Middle Jurassic, dorsal, ventral, lateral, and anterior views. 5–8. Ptilorhynchia jeletzkyi Owen, USGS Mesozoic locality 14496, co–occurs with Buchia mosquensis (von Buch), probably Naknek series, Kimmeridgian–Tithonian(?), Upper Jurassic, McCarthy Quadrangle, Alaska. Collector, Fred H. Moffit, 1928. Dorsal, ventral, lateral, and anterior views.9–17. Ptilorhynchia obscuricostata Dagys. 9–12. PMO 224.880, seep 9, dorsal, ventral, lateral, and anterior views. 13–17. PMO 224.881, seep 9, dorsal, ventral, lateral, anterior and posterior views. Scale bar = 1 cm.	2014-11-19	Sandy, Michael R.;Hryniewicz, Krzysztof;Hammer, Øyvind;Nakrem, Hans Arne;Little, Crispin T. S.		Zenodo	biologists	Sandy, Michael R.;Hryniewicz, Krzysztof;Hammer, Øyvind;Nakrem, Hans Arne;Little, Crispin T. S.			
466F6C336254FFB196854704FDBB3103.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/4951772/files/figure.png	http://doi.org/10.5281/zenodo.4951772	FIGURE 6. 1–4. Ptilorhynchia aff. plumasensis Crickmay, USGS Mesozoic Locality 32032 (=80Ace119), Karluk Quadrangle, Alaska, Shelikof Formation, Callovian, Middle Jurassic, dorsal, ventral, lateral, and anterior views. 5–8. Ptilorhynchia jeletzkyi Owen, USGS Mesozoic locality 14496, co–occurs with Buchia mosquensis (von Buch), probably Naknek series, Kimmeridgian–Tithonian(?), Upper Jurassic, McCarthy Quadrangle, Alaska. Collector, Fred H. Moffit, 1928. Dorsal, ventral, lateral, and anterior views.9–17. Ptilorhynchia obscuricostata Dagys. 9–12. PMO 224.880, seep 9, dorsal, ventral, lateral, and anterior views. 13–17. PMO 224.881, seep 9, dorsal, ventral, lateral, anterior and posterior views. Scale bar = 1 cm.	FIGURE 6. 1–4. Ptilorhynchia aff. plumasensis Crickmay, USGS Mesozoic Locality 32032 (=80Ace119), Karluk Quadrangle, Alaska, Shelikof Formation, Callovian, Middle Jurassic, dorsal, ventral, lateral, and anterior views. 5–8. Ptilorhynchia jeletzkyi Owen, USGS Mesozoic locality 14496, co–occurs with Buchia mosquensis (von Buch), probably Naknek series, Kimmeridgian–Tithonian(?), Upper Jurassic, McCarthy Quadrangle, Alaska. Collector, Fred H. Moffit, 1928. Dorsal, ventral, lateral, and anterior views.9–17. Ptilorhynchia obscuricostata Dagys. 9–12. PMO 224.880, seep 9, dorsal, ventral, lateral, and anterior views. 13–17. PMO 224.881, seep 9, dorsal, ventral, lateral, anterior and posterior views. Scale bar = 1 cm.	2014-11-19	Sandy, Michael R.;Hryniewicz, Krzysztof;Hammer, Øyvind;Nakrem, Hans Arne;Little, Crispin T. S.		Zenodo	biologists	Sandy, Michael R.;Hryniewicz, Krzysztof;Hammer, Øyvind;Nakrem, Hans Arne;Little, Crispin T. S.			
466F6C336256FFB19685418FFBC83740.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/4951778/files/figure.png	http://doi.org/10.5281/zenodo.4951778	FIGURE 7. 1–4. Cyrtothyris aff. cyrta (Walker). PMO 224.895, seep 9, dorsal, ventral, lateral, and anterior views. 5–8. Cyrtothyris? sp. PMO 224.870, seep 3, dorsal, ventral, lateral, and anterior views. 9–20. Praelongithyris? aff. borealis Owen. 9–12. PMO 224.907, seep 1, dorsal, ventral, lateral, and anterior views. 13–16. PMO 224.898, seep 9, dorsal, ventral, lateral, and anterior views. Resembles juvenile Cyrtothyris. 17–20. PMO 224.886, seep 1, dorsal, ventral, lateral, and anterior views. Form resembling Moutonithyris moutoniana (d’Orbigny). 21–24. Rouillieria cf. michalkowii (Fahrenkohl). PMO 224.901, seep 9, dorsal, ventral, lateral, and anterior views.Scale bar = 1 cm.	FIGURE 7. 1–4. Cyrtothyris aff. cyrta (Walker). PMO 224.895, seep 9, dorsal, ventral, lateral, and anterior views. 5–8. Cyrtothyris? sp. PMO 224.870, seep 3, dorsal, ventral, lateral, and anterior views. 9–20. Praelongithyris? aff. borealis Owen. 9–12. PMO 224.907, seep 1, dorsal, ventral, lateral, and anterior views. 13–16. PMO 224.898, seep 9, dorsal, ventral, lateral, and anterior views. Resembles juvenile Cyrtothyris. 17–20. PMO 224.886, seep 1, dorsal, ventral, lateral, and anterior views. Form resembling Moutonithyris moutoniana (d’Orbigny). 21–24. Rouillieria cf. michalkowii (Fahrenkohl). PMO 224.901, seep 9, dorsal, ventral, lateral, and anterior views.Scale bar = 1 cm.	2014-11-19	Sandy, Michael R.;Hryniewicz, Krzysztof;Hammer, Øyvind;Nakrem, Hans Arne;Little, Crispin T. S.		Zenodo	biologists	Sandy, Michael R.;Hryniewicz, Krzysztof;Hammer, Øyvind;Nakrem, Hans Arne;Little, Crispin T. S.			
466F6C336248FFAF96854284FBEE3433.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/4951778/files/figure.png	http://doi.org/10.5281/zenodo.4951778	FIGURE 7. 1–4. Cyrtothyris aff. cyrta (Walker). PMO 224.895, seep 9, dorsal, ventral, lateral, and anterior views. 5–8. Cyrtothyris? sp. PMO 224.870, seep 3, dorsal, ventral, lateral, and anterior views. 9–20. Praelongithyris? aff. borealis Owen. 9–12. PMO 224.907, seep 1, dorsal, ventral, lateral, and anterior views. 13–16. PMO 224.898, seep 9, dorsal, ventral, lateral, and anterior views. Resembles juvenile Cyrtothyris. 17–20. PMO 224.886, seep 1, dorsal, ventral, lateral, and anterior views. Form resembling Moutonithyris moutoniana (d’Orbigny). 21–24. Rouillieria cf. michalkowii (Fahrenkohl). PMO 224.901, seep 9, dorsal, ventral, lateral, and anterior views.Scale bar = 1 cm.	FIGURE 7. 1–4. Cyrtothyris aff. cyrta (Walker). PMO 224.895, seep 9, dorsal, ventral, lateral, and anterior views. 5–8. Cyrtothyris? sp. PMO 224.870, seep 3, dorsal, ventral, lateral, and anterior views. 9–20. Praelongithyris? aff. borealis Owen. 9–12. PMO 224.907, seep 1, dorsal, ventral, lateral, and anterior views. 13–16. PMO 224.898, seep 9, dorsal, ventral, lateral, and anterior views. Resembles juvenile Cyrtothyris. 17–20. PMO 224.886, seep 1, dorsal, ventral, lateral, and anterior views. Form resembling Moutonithyris moutoniana (d’Orbigny). 21–24. Rouillieria cf. michalkowii (Fahrenkohl). PMO 224.901, seep 9, dorsal, ventral, lateral, and anterior views.Scale bar = 1 cm.	2014-11-19	Sandy, Michael R.;Hryniewicz, Krzysztof;Hammer, Øyvind;Nakrem, Hans Arne;Little, Crispin T. S.		Zenodo	biologists	Sandy, Michael R.;Hryniewicz, Krzysztof;Hammer, Øyvind;Nakrem, Hans Arne;Little, Crispin T. S.			
466F6C336248FFAC96854452FBC8343E.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/4951778/files/figure.png	http://doi.org/10.5281/zenodo.4951778	FIGURE 7. 1–4. Cyrtothyris aff. cyrta (Walker). PMO 224.895, seep 9, dorsal, ventral, lateral, and anterior views. 5–8. Cyrtothyris? sp. PMO 224.870, seep 3, dorsal, ventral, lateral, and anterior views. 9–20. Praelongithyris? aff. borealis Owen. 9–12. PMO 224.907, seep 1, dorsal, ventral, lateral, and anterior views. 13–16. PMO 224.898, seep 9, dorsal, ventral, lateral, and anterior views. Resembles juvenile Cyrtothyris. 17–20. PMO 224.886, seep 1, dorsal, ventral, lateral, and anterior views. Form resembling Moutonithyris moutoniana (d’Orbigny). 21–24. Rouillieria cf. michalkowii (Fahrenkohl). PMO 224.901, seep 9, dorsal, ventral, lateral, and anterior views.Scale bar = 1 cm.	FIGURE 7. 1–4. Cyrtothyris aff. cyrta (Walker). PMO 224.895, seep 9, dorsal, ventral, lateral, and anterior views. 5–8. Cyrtothyris? sp. PMO 224.870, seep 3, dorsal, ventral, lateral, and anterior views. 9–20. Praelongithyris? aff. borealis Owen. 9–12. PMO 224.907, seep 1, dorsal, ventral, lateral, and anterior views. 13–16. PMO 224.898, seep 9, dorsal, ventral, lateral, and anterior views. Resembles juvenile Cyrtothyris. 17–20. PMO 224.886, seep 1, dorsal, ventral, lateral, and anterior views. Form resembling Moutonithyris moutoniana (d’Orbigny). 21–24. Rouillieria cf. michalkowii (Fahrenkohl). PMO 224.901, seep 9, dorsal, ventral, lateral, and anterior views.Scale bar = 1 cm.	2014-11-19	Sandy, Michael R.;Hryniewicz, Krzysztof;Hammer, Øyvind;Nakrem, Hans Arne;Little, Crispin T. S.		Zenodo	biologists	Sandy, Michael R.;Hryniewicz, Krzysztof;Hammer, Øyvind;Nakrem, Hans Arne;Little, Crispin T. S.			
466F6C336248FFAC96854452FBC8343E.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/4951784/files/figure.png	http://doi.org/10.5281/zenodo.4951784	FIGURE 8. 1–8. Rouillieria cf. michalkowii (Fahrenkohl). 1–4. PMO 227.422, seep 13, dorsal, ventral, lateral, and anterior views. 5–8. PMO 227.420, seep 8, dorsal, ventral, lateral, and anterior views. Specimen serially sectioned (Figure 9). 9–16. Rouillieria aff. ovoides (Sowerby). 9–12. PMO 224.926, seep 8, dorsal, ventral, lateral, and anterior views. 13–16. PMO 227.426, seep 13, dorsal, ventral, lateral, and anterior views. 17–20. Rouillieria cf. rasile Smirnova, PMO 224.929, seep 8, dorsal, ventral, lateral, and anterior views. Scale bars = 1 cm for each specimen.	FIGURE 8. 1–8. Rouillieria cf. michalkowii (Fahrenkohl). 1–4. PMO 227.422, seep 13, dorsal, ventral, lateral, and anterior views. 5–8. PMO 227.420, seep 8, dorsal, ventral, lateral, and anterior views. Specimen serially sectioned (Figure 9). 9–16. Rouillieria aff. ovoides (Sowerby). 9–12. PMO 224.926, seep 8, dorsal, ventral, lateral, and anterior views. 13–16. PMO 227.426, seep 13, dorsal, ventral, lateral, and anterior views. 17–20. Rouillieria cf. rasile Smirnova, PMO 224.929, seep 8, dorsal, ventral, lateral, and anterior views. Scale bars = 1 cm for each specimen.	2014-11-19	Sandy, Michael R.;Hryniewicz, Krzysztof;Hammer, Øyvind;Nakrem, Hans Arne;Little, Crispin T. S.		Zenodo	biologists	Sandy, Michael R.;Hryniewicz, Krzysztof;Hammer, Øyvind;Nakrem, Hans Arne;Little, Crispin T. S.			
466F6C336248FFAC96854452FBC8343E.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/4951790/files/figure.png	http://doi.org/10.5281/zenodo.4951790	FIGURE 9. Transverse serial sections of Rouillieria cf. michalkowii (Fahrenkohl), seep 8, PMO 227.420. Serial sections prepared perpendicular to maximum length of the specimen, numbering of sections starts at 0.0 mm the initial section through the specimen. Dotted line delimits sections drawn at the same magnification. Dimensions of sectioned specimen: L 35.1; W 26.5; T 16.9mm. Scale bar = 1 mm.	FIGURE 9. Transverse serial sections of Rouillieria cf. michalkowii (Fahrenkohl), seep 8, PMO 227.420. Serial sections prepared perpendicular to maximum length of the specimen, numbering of sections starts at 0.0 mm the initial section through the specimen. Dotted line delimits sections drawn at the same magnification. Dimensions of sectioned specimen: L 35.1; W 26.5; T 16.9mm. Scale bar = 1 mm.	2014-11-19	Sandy, Michael R.;Hryniewicz, Krzysztof;Hammer, Øyvind;Nakrem, Hans Arne;Little, Crispin T. S.		Zenodo	biologists	Sandy, Michael R.;Hryniewicz, Krzysztof;Hammer, Øyvind;Nakrem, Hans Arne;Little, Crispin T. S.			
466F6C33624BFFAB968546DCFBC8337B.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/4951784/files/figure.png	http://doi.org/10.5281/zenodo.4951784	FIGURE 8. 1–8. Rouillieria cf. michalkowii (Fahrenkohl). 1–4. PMO 227.422, seep 13, dorsal, ventral, lateral, and anterior views. 5–8. PMO 227.420, seep 8, dorsal, ventral, lateral, and anterior views. Specimen serially sectioned (Figure 9). 9–16. Rouillieria aff. ovoides (Sowerby). 9–12. PMO 224.926, seep 8, dorsal, ventral, lateral, and anterior views. 13–16. PMO 227.426, seep 13, dorsal, ventral, lateral, and anterior views. 17–20. Rouillieria cf. rasile Smirnova, PMO 224.929, seep 8, dorsal, ventral, lateral, and anterior views. Scale bars = 1 cm for each specimen.	FIGURE 8. 1–8. Rouillieria cf. michalkowii (Fahrenkohl). 1–4. PMO 227.422, seep 13, dorsal, ventral, lateral, and anterior views. 5–8. PMO 227.420, seep 8, dorsal, ventral, lateral, and anterior views. Specimen serially sectioned (Figure 9). 9–16. Rouillieria aff. ovoides (Sowerby). 9–12. PMO 224.926, seep 8, dorsal, ventral, lateral, and anterior views. 13–16. PMO 227.426, seep 13, dorsal, ventral, lateral, and anterior views. 17–20. Rouillieria cf. rasile Smirnova, PMO 224.929, seep 8, dorsal, ventral, lateral, and anterior views. Scale bars = 1 cm for each specimen.	2014-11-19	Sandy, Michael R.;Hryniewicz, Krzysztof;Hammer, Øyvind;Nakrem, Hans Arne;Little, Crispin T. S.		Zenodo	biologists	Sandy, Michael R.;Hryniewicz, Krzysztof;Hammer, Øyvind;Nakrem, Hans Arne;Little, Crispin T. S.			
466F6C33624BFFAB968546DCFBC8337B.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/4951790/files/figure.png	http://doi.org/10.5281/zenodo.4951790	FIGURE 9. Transverse serial sections of Rouillieria cf. michalkowii (Fahrenkohl), seep 8, PMO 227.420. Serial sections prepared perpendicular to maximum length of the specimen, numbering of sections starts at 0.0 mm the initial section through the specimen. Dotted line delimits sections drawn at the same magnification. Dimensions of sectioned specimen: L 35.1; W 26.5; T 16.9mm. Scale bar = 1 mm.	FIGURE 9. Transverse serial sections of Rouillieria cf. michalkowii (Fahrenkohl), seep 8, PMO 227.420. Serial sections prepared perpendicular to maximum length of the specimen, numbering of sections starts at 0.0 mm the initial section through the specimen. Dotted line delimits sections drawn at the same magnification. Dimensions of sectioned specimen: L 35.1; W 26.5; T 16.9mm. Scale bar = 1 mm.	2014-11-19	Sandy, Michael R.;Hryniewicz, Krzysztof;Hammer, Øyvind;Nakrem, Hans Arne;Little, Crispin T. S.		Zenodo	biologists	Sandy, Michael R.;Hryniewicz, Krzysztof;Hammer, Øyvind;Nakrem, Hans Arne;Little, Crispin T. S.			
466F6C33624CFFAB9685419FFBC8365B.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/4951784/files/figure.png	http://doi.org/10.5281/zenodo.4951784	FIGURE 8. 1–8. Rouillieria cf. michalkowii (Fahrenkohl). 1–4. PMO 227.422, seep 13, dorsal, ventral, lateral, and anterior views. 5–8. PMO 227.420, seep 8, dorsal, ventral, lateral, and anterior views. Specimen serially sectioned (Figure 9). 9–16. Rouillieria aff. ovoides (Sowerby). 9–12. PMO 224.926, seep 8, dorsal, ventral, lateral, and anterior views. 13–16. PMO 227.426, seep 13, dorsal, ventral, lateral, and anterior views. 17–20. Rouillieria cf. rasile Smirnova, PMO 224.929, seep 8, dorsal, ventral, lateral, and anterior views. Scale bars = 1 cm for each specimen.	FIGURE 8. 1–8. Rouillieria cf. michalkowii (Fahrenkohl). 1–4. PMO 227.422, seep 13, dorsal, ventral, lateral, and anterior views. 5–8. PMO 227.420, seep 8, dorsal, ventral, lateral, and anterior views. Specimen serially sectioned (Figure 9). 9–16. Rouillieria aff. ovoides (Sowerby). 9–12. PMO 224.926, seep 8, dorsal, ventral, lateral, and anterior views. 13–16. PMO 227.426, seep 13, dorsal, ventral, lateral, and anterior views. 17–20. Rouillieria cf. rasile Smirnova, PMO 224.929, seep 8, dorsal, ventral, lateral, and anterior views. Scale bars = 1 cm for each specimen.	2014-11-19	Sandy, Michael R.;Hryniewicz, Krzysztof;Hammer, Øyvind;Nakrem, Hans Arne;Little, Crispin T. S.		Zenodo	biologists	Sandy, Michael R.;Hryniewicz, Krzysztof;Hammer, Øyvind;Nakrem, Hans Arne;Little, Crispin T. S.			
466F6C33624CFFAA9685450AFBC83193.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/4951794/files/figure.png	http://doi.org/10.5281/zenodo.4951794	FIGURE 10. 1–8. Uralella? cf. janimaniensis Makridin. 1–4. PMO 224.944, seep 3, dorsal, ventral, lateral, and anterior views. 5–8. PMO 224.938, seep 3, dorsal, ventral, lateral, and anterior views. Scale bar = 1 cm.	FIGURE 10. 1–8. Uralella? cf. janimaniensis Makridin. 1–4. PMO 224.944, seep 3, dorsal, ventral, lateral, and anterior views. 5–8. PMO 224.938, seep 3, dorsal, ventral, lateral, and anterior views. Scale bar = 1 cm.	2014-11-19	Sandy, Michael R.;Hryniewicz, Krzysztof;Hammer, Øyvind;Nakrem, Hans Arne;Little, Crispin T. S.		Zenodo	biologists	Sandy, Michael R.;Hryniewicz, Krzysztof;Hammer, Øyvind;Nakrem, Hans Arne;Little, Crispin T. S.			
466F6C33624EFFA696854284FBA43193.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/4951796/files/figure.png	http://doi.org/10.5281/zenodo.4951796	FIGURE 11. Seductorithyris septemtrionalis gen. et sp. nov. 1–4. Holotype, PMO 224.896, seep 9, dorsal, ventral, lateral, and anterior views. 5–8. PMO 224.911, seep 9, dorsal, ventral, lateral, and anterior views. 9–12. PMO 224.913, seep 9, dorsal, ventral, lateral, and anterior views. 13–16. PMO 227.430, seep 9, dorsal, ventral, lateral, and anterior views. Specimen serially sectioned (Figure 12). Scale bar = 1 cm.	FIGURE 11. Seductorithyris septemtrionalis gen. et sp. nov. 1–4. Holotype, PMO 224.896, seep 9, dorsal, ventral, lateral, and anterior views. 5–8. PMO 224.911, seep 9, dorsal, ventral, lateral, and anterior views. 9–12. PMO 224.913, seep 9, dorsal, ventral, lateral, and anterior views. 13–16. PMO 227.430, seep 9, dorsal, ventral, lateral, and anterior views. Specimen serially sectioned (Figure 12). Scale bar = 1 cm.	2014-11-19	Sandy, Michael R.;Hryniewicz, Krzysztof;Hammer, Øyvind;Nakrem, Hans Arne;Little, Crispin T. S.		Zenodo	biologists	Sandy, Michael R.;Hryniewicz, Krzysztof;Hammer, Øyvind;Nakrem, Hans Arne;Little, Crispin T. S.			
466F6C33624EFFA696854284FBA43193.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/4951804/files/figure.png	http://doi.org/10.5281/zenodo.4951804	FIGURE 12. Transverse serial sections of Seductorithyris septemtrionalis gen. and sp. nov., seep 9, PMO 227.430. Serial sections prepared perpendicular to maximum length of the specimen, numbering of sections starts at 0.0 mm the initial section through the specimen. Dotted lines delimit groups of sections drawn at the same magnification. For section 11.4 mm enlargement of brachidial flanges shown adjacent to lower magnification drawing. Dimensions of sectioned specimen: L 25.3+; W 25.1+; T 13.9 mm. Scale bars = 1 mm.	FIGURE 12. Transverse serial sections of Seductorithyris septemtrionalis gen. and sp. nov., seep 9, PMO 227.430. Serial sections prepared perpendicular to maximum length of the specimen, numbering of sections starts at 0.0 mm the initial section through the specimen. Dotted lines delimit groups of sections drawn at the same magnification. For section 11.4 mm enlargement of brachidial flanges shown adjacent to lower magnification drawing. Dimensions of sectioned specimen: L 25.3+; W 25.1+; T 13.9 mm. Scale bars = 1 mm.	2014-11-19	Sandy, Michael R.;Hryniewicz, Krzysztof;Hammer, Øyvind;Nakrem, Hans Arne;Little, Crispin T. S.		Zenodo	biologists	Sandy, Michael R.;Hryniewicz, Krzysztof;Hammer, Øyvind;Nakrem, Hans Arne;Little, Crispin T. S.			
466F6C33624EFFA696854284FBA43193.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/4951808/files/figure.png	http://doi.org/10.5281/zenodo.4951808	FIGURE 13. 1–4. Pinaxiothyris campestris? Dagys, PMO 227.429, seep 9, dorsal, ventral, lateral, and anterior views. 5–8. Placothyris kegeli? Harper et al., PMO 224.922, seep 3, dorsal, ventral, lateral, and anterior views. 9–12. Placothyris kegeli Harper et al., MGUH 27501, Brorson Halvø, Wollaston Forland, North–East Greenland; Albrechts Bugt Member, Lower Valanginian. Specimen serially sectioned by Sandy in Harper et al. (2005, fig. 3). 13–20. Zittelina? sp. 13–16. PMO 224.869, seep 9, dorsal, ventral, lateral, and anterior views. 17–20. PMO 224.885, seep 9, dorsal, ventral, lateral, and anterior views. Scale bars = 1 cm.	FIGURE 13. 1–4. Pinaxiothyris campestris? Dagys, PMO 227.429, seep 9, dorsal, ventral, lateral, and anterior views. 5–8. Placothyris kegeli? Harper et al., PMO 224.922, seep 3, dorsal, ventral, lateral, and anterior views. 9–12. Placothyris kegeli Harper et al., MGUH 27501, Brorson Halvø, Wollaston Forland, North–East Greenland; Albrechts Bugt Member, Lower Valanginian. Specimen serially sectioned by Sandy in Harper et al. (2005, fig. 3). 13–20. Zittelina? sp. 13–16. PMO 224.869, seep 9, dorsal, ventral, lateral, and anterior views. 17–20. PMO 224.885, seep 9, dorsal, ventral, lateral, and anterior views. Scale bars = 1 cm.	2014-11-19	Sandy, Michael R.;Hryniewicz, Krzysztof;Hammer, Øyvind;Nakrem, Hans Arne;Little, Crispin T. S.		Zenodo	biologists	Sandy, Michael R.;Hryniewicz, Krzysztof;Hammer, Øyvind;Nakrem, Hans Arne;Little, Crispin T. S.			
466F6C336241FFA4968541F5FBA43103.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/4951808/files/figure.png	http://doi.org/10.5281/zenodo.4951808	FIGURE 13. 1–4. Pinaxiothyris campestris? Dagys, PMO 227.429, seep 9, dorsal, ventral, lateral, and anterior views. 5–8. Placothyris kegeli? Harper et al., PMO 224.922, seep 3, dorsal, ventral, lateral, and anterior views. 9–12. Placothyris kegeli Harper et al., MGUH 27501, Brorson Halvø, Wollaston Forland, North–East Greenland; Albrechts Bugt Member, Lower Valanginian. Specimen serially sectioned by Sandy in Harper et al. (2005, fig. 3). 13–20. Zittelina? sp. 13–16. PMO 224.869, seep 9, dorsal, ventral, lateral, and anterior views. 17–20. PMO 224.885, seep 9, dorsal, ventral, lateral, and anterior views. Scale bars = 1 cm.	FIGURE 13. 1–4. Pinaxiothyris campestris? Dagys, PMO 227.429, seep 9, dorsal, ventral, lateral, and anterior views. 5–8. Placothyris kegeli? Harper et al., PMO 224.922, seep 3, dorsal, ventral, lateral, and anterior views. 9–12. Placothyris kegeli Harper et al., MGUH 27501, Brorson Halvø, Wollaston Forland, North–East Greenland; Albrechts Bugt Member, Lower Valanginian. Specimen serially sectioned by Sandy in Harper et al. (2005, fig. 3). 13–20. Zittelina? sp. 13–16. PMO 224.869, seep 9, dorsal, ventral, lateral, and anterior views. 17–20. PMO 224.885, seep 9, dorsal, ventral, lateral, and anterior views. Scale bars = 1 cm.	2014-11-19	Sandy, Michael R.;Hryniewicz, Krzysztof;Hammer, Øyvind;Nakrem, Hans Arne;Little, Crispin T. S.		Zenodo	biologists	Sandy, Michael R.;Hryniewicz, Krzysztof;Hammer, Øyvind;Nakrem, Hans Arne;Little, Crispin T. S.			
