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875 results for “Brachiopod”
FIG. 23 in Silurian and Devonian brachiopods from Severnaya Zemlya (Russian Arctic)
FIG. 23. — Selected transverse serial sections, illustrating the development of internal structures in Dubaria tenera Nikiforova & T. Modzalevskaya, 1968 (N 15/12991). Measurements: length 5.6 mm, width 8.0 mm, thickness 4.5 mm; loc. 13, bed 64, Golomyannyj Formation. Numerical designations are the same as on Fig. 11. Scale bar: 10 mm.
FIG. 21. — A-H in Silurian and Devonian brachiopods from Severnaya Zemlya (Russian Arctic)
FIG. 21. — A-H, Anulatrypa nieczlawiensis tenuicostata Tcherkesova in Modzalevskaya & Cherkesova, 1994; A, E, ventral view; B, F, dorsal view; C, G, lateral view; D, H, anterior view of a young and adult complete shells (N 55/12991, 56/12991), loc. 18095, Rusanov Formation; I, Dihelictera cf. lepidota (Nikiforova & T. Modzalevskaya, 1968), ventral view of a pedicle valve (N 47/12991), loc. 2, bed 79, Samojlovich Formation. Scale bars: A-D, I, 5 mm; E-H, 6 mm.
FIG. 18 in Silurian and Devonian brachiopods from Severnaya Zemlya (Russian Arctic)
FIG. 18. — Selected transverse serial sections, illustrating the development of internal structures in Sibiritoechia convexa Alekseeva, 1966 (N 46/12991). Measurements: length 6.4 mm, width 6.6 mm, thickness 4.1 mm; loc. 21581, Severnaya or Pod''emnaya formations. Numerical designations are the same as on Fig. 11. Scale bar: 1.9 mm.
FIG. 19 in Silurian and Devonian brachiopods from Severnaya Zemlya (Russian Arctic)
FIG. 19. — Selected transverse serial sections, illustrating the development of internal structures in Dihelictera cf. lepidota (Nikiforova & T. Modzalevskaya, 1968); A, ventral valve (N 48/12991), length 10.2 mm, loc. 2, bed 79, Samojlovich Formation; B, dorsal valve (N 49/12991), length 10.0 mm; loc. 11, bed 14, Samojlovich Formation. Numerical designations are the same as on Fig. 11. Scale bar: 2.3 mm.
FIG. 17 in Silurian and Devonian brachiopods from Severnaya Zemlya (Russian Arctic)
FIG. 17. — Sibiritoechia convexa Alekseeva, 1966, complete shells (NN 44/12991, 45/12991), loc. 21581, Severnaya Zemlya or Pod''emnaya formations; A, E, ventral view; B, F, dorsal view; C, G, lateral view; D, H, anterior view. Scale bar: 5 mm.
FIG. 20 in Silurian and Devonian brachiopods from Severnaya Zemlya (Russian Arctic)
FIG. 20. — Selected transverse serial sections, illustrating the development of internal strutures in Anabaria? latens n. sp. (N 54/12991). Measurements: length 8.7 mm, width 8.7 mm, thickness 6.2 mm; loc. 13, bed 64, Golomyannyj Formation. Numerical designations are the same as on Fig. 11. Scale bar: 3.2 mm.
FIG. 16 in Silurian and Devonian brachiopods from Severnaya Zemlya (Russian Arctic)
FIG. 16. — Selected transverse serial sections, illustrating the development of internal structures in Stegerhynchus? decemplicatus duplex Nikiforova & T. Modzalevskaya, 1968 (N 39/12991). Measurements: length 7.7 mm, width 10.3 mm, thickness 4.9 mm; loc. 13, bed 89, Vodopad Formation. Numerical designations are the same as on Fig. 11. Scale bar: 2 mm.
FIG. 15 in Silurian and Devonian brachiopods from Severnaya Zemlya (Russian Arctic)
FIG. 15. — Selected transverse serial sections, illustrating the development of internal structures in Lenatoechia octjabrensis n. sp. (N 43/12991). Measurements: length 8.1 mm, width 8.2 mm, thickness 5.9 mm; loc. 2, bed 66, Samojlovich Formation. Numerical designations are the same as on Fig. 11. Scale bar: 3 mm.
FIG. 14. — A-E in Silurian and Devonian brachiopods from Severnaya Zemlya (Russian Arctic)
FIG. 14. — A-E, Stegerhynchus? decemplicatus duplex Nikiforova & T. Modzalevskaya, 1968; A, ventral view; B, dorsal view; C, lateral view; D, anterior view; E, enlarged external surface of a complete shell (N 38/12991), loc. 13, bed 89, Vodopad Formation; F-I, V, Anabaria? latens n. sp.; F, dorsal view; G, ventral view; H, lateral view; I, anterior view of a complete shell (holotype N 50/12991), loc. 11, bed 6B, Samojlovich Formation; V, enlarged external surface of a poorly silicified shell (N 51/12991), loc. 29a,?Vodopad Formation; J-P, R, S, Lenatoechia octjabrensis n. sp.; J, ventral view; K, dorsal view; L, lateral view; M, anterior views of a complete shell (N 41/12991), loc. 11, bed 6B, Samojlovich Formation; N, ventral view; O, dorsal view; P, lateral view of a complete shell (holotype N 40/12991), loc. 2, bed 66, Samojlovich Formation; R, ventral view; S, dorsal view of complete shell (N 42/12991), loc. 117v,?Samojlovich Formation; Q, T, U, Anabaria? latens n. sp.; Q, pedicle valve of a complete shell (N 52/12991), loc. 13, bed 27, Srednij Formation; T, ventral view; U, dorsal view of a complete shell (N 53/12991), loc. 13, bed 64, Golomyannyj Formation. Scale bars: A-D, F-M, 5 mm; E, V, 2 mm; N-U, 3 mm.
FIG. 6. — A-F in Pliocene brachiopods from north-western Africa
FIG. 6. — A-F, Terebratulina retusa (Linnaeus, 1758), Mustapha (Algiers), Algeria (LP-MNHN B.38659); A-D, ventral, dorsal, lateral and anterior views of complete specimen; E, F, dorsal views of complete specimens; F, SEM micrograph of juvenile specimen; G, H, Megathiris detruncata (Gmelin, 1790), SEM micrographs of ventral and dorsal views of complete specimen, Mustapha (Algiers), Algeria (LP-MNHN B.38665). Scale bars: 2 mm.
FIG. 25 in Silurian and Devonian brachiopods from Severnaya Zemlya (Russian Arctic)
FIG. 25. — Selected transverse serial sections, illustrating the development of internal structures in Reticulariopsis talenti Lenz & Johnson, 1985 (N 67/12991). Measurements: length 5.1 mm, width 6.3 mm, thickness 4.0 mm; loc. 21581, Severnaya Zemlya or Pod''emnaya formations. Numerical designations are the same as on Fig. 11. Scale bar: 1.4 mm.
FIG. 3 in Pliocene brachiopods from north-western Africa
FIG. 3. — Terebratula terebratula (Linnaeus, 1758); A-F, Douera, Algeria (LP-MNHN B.38650); A-D, ventral, dorsal, lateral and anteri- or views of complete specimen; E, F, dorsal and lateral views of complete specimen; G, dorsal view of complete specimen, Draria, Algeria (LP-MNHN B.38654); H, I, Algiers, between Mustapha inférieur and Bir Mourad Raïs, Algeria (LP-MNHN B.38675); H, inner view of the ventral valve, visible is concave symphytium and massive teeth; I, inner view of complete specimen, showing a prominent cardinal process and narrow outer hinge plates. Scale bars: 1 cm.
FIG. 11 in Silurian and Devonian brachiopods from Severnaya Zemlya (Russian Arctic)
FIG. 11. — Selected transverse serial sections, illustrating the development of internal structures in Borealis cristiformis (T. Modzalevskaya, 1985) (N 31/12991). Measurements: length 29.1 mm, width 24.0 mm, thickness 22.2 mm; loc. 14, bed 10v, Vodopad Formation. Numbers on selected transverse sections indicate the distances (in mm) from ventral beak. Scale bar: 8 mm.
FIG. 13 in Silurian and Devonian brachiopods from Severnaya Zemlya (Russian Arctic)
FIG. 13. — Harpidium sp., complete shell (N 37/12991), loc. 13, bed 27, Vodopad Formation; A, dorsal view; B, lateral view; C, posterior view. Scale bar: 10 mm.
FIG. 10 in Silurian and Devonian brachiopods from Severnaya Zemlya (Russian Arctic)
FIG. 10. — Borealis cristiformis (T. Modzalevskaya, 1985); A, dorsal view of a brachial valve (N 28/12991); B, internal longitudinal ventral septum (N 30/12991); C, D, complete slightly damaged shell (N 29/12991), loc. 14, bed 10b, Vodopad Formation; C, dorsal view; D, lateral view. Scale bars: A, B, 6 mm; C, D, 10 mm.
FIG. 9 in Silurian and Devonian brachiopods from Severnaya Zemlya (Russian Arctic)
FIG. 9. — Dalejina ex gr. hybrida (Sowerby in Murchison, 1839), complete shell (N 2/12991), loc. 13, bed 89, Vodopad Formation; A, ventral view; B, dorsal view; C, lateral view; D, anterior view. Scale bar: 3 mm.
FIG. 8 in Silurian and Devonian brachiopods from Severnaya Zemlya (Russian Arctic)
FIG. 8. — Sinochonetes wangi Racheboeuf, 1987; A-C, interior view of pedicle valves (N 18/12991, 19/12991, 20/12991), loc. 21581, Severnaya Zemlya or Pod''emnaya formations; D, ventral view of a complete valve (N 21/12991); E, external view of a shelly limestone with pedicle and brachial valves; F, L, complete valve (N 22/12991); F, dorsal view; L, posterior views with a pseudodeltidium and chilidium; G, dorsal valve, showing enlarged external surface with a fine striae (N 23/12991); H, posterior view of a pedicle valve, showing a delthyrium, covered by pseudodeltidium posteriorly (N 24/12991); I, K, dorsal valves with well preserved spines near cardinal margin (NN 25/12991, 26/12991); J, internal mould of a dorsal valve, showing a median septum and anderidia (N 27/12991). Scale bars: A-D, 2.5 mm; E, 5 mm; F-K, 2 mm; L, 1 mm.
FIG. 4 in Silurian and Devonian brachiopods from Severnaya Zemlya (Russian Arctic)
FIG. 4. — Pentlandina? sp., complete shell (N 8/12991), loc. 29a,?Vodopad Formation; A, posterior view; B, ventral view. Scale bar: 5 mm.
FIG. 5. — Brachyprion ruminatus n in Silurian and Devonian brachiopods from Severnaya Zemlya (Russian Arctic)
FIG. 5. — Brachyprion ruminatus n. sp.; A, B, pedicle valve (holotype N 9/12991), loc. 11, bed 14A, Samojlovich Formation; A, ventral view; B, lateral view; C, ventral view of an internal mould of a pedicle valve (N 10/12991), loc. 11, bed 14, Samojlovich Formation; D, ventral view of an internal mould of a pedicle valve with well developed impressions of concentric rugae (N 11/12991); E, note the radially arranged pseudopunctae at anterior margin (N 12/12991), loc. 11, bed 20, Samojlovich Formation. Scale bars: A, B, D, 6 mm; C, 5 mm; E, 2 mm.
FIG. 7 in Silurian and Devonian brachiopods from Severnaya Zemlya (Russian Arctic)
FIG. 7. — Morinorhynchus proprius (Lopushinskaya, 1965); A, B, complete shell (N 16/12991), loc. 11, bed 6B, Samojlovich Formation; A, ventral view; B, dorsal view; C, dorsal interior with bilobate cardinal process (N 17/12991), loc. 2, bed 66, Samojlovich Formation. Scale bars: A, B, 5 mm; C, 2 mm.
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