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74 results for “Symmoriiformes”
Fig. 64 in The Braincase In Paleozoic Symmoriiform And Cladoselachian Sharks
Fig. 64. ''Cobelodus''. Left side of head, with a reconstruction of main musculature associated with the jaws. No scale.
Fig. 63 in The Braincase In Paleozoic Symmoriiform And Cladoselachian Sharks
Fig. 63. ''Cobelodus''. Left side of head skeleton, with a reconstruction of the jaws and hyoid arch. No scale.
Fig. 62 in The Braincase In Paleozoic Symmoriiform And Cladoselachian Sharks
Fig. 62. Two early osteichthyan neurocrania in lateral view, showing positions of landmark features associated with the embryonic polar cartilage and antotic pila in modern gnathostomes. A, The primitive actinopterygian Ligulalepis sp., left side (after Basden and Young, 2001); B, The primitive sarcopterygian Achoania jarviki, right side of ethmosphenoid region (after Zhu et al., 2001; position of oculomotor foramen inferred from Psarolepis romeri, after Yu, 1998). Scale bars 5 5 mm.
Fig. 60 in The Braincase In Paleozoic Symmoriiform And Cladoselachian Sharks
Fig. 60. Cladoselache sp., CMNH 5611, Cleveland Shale, Berea, Ohio. Ventral view of braincase lacking postorbital processes. Scale bar 5 10 mm.
Fig. 59. Cladoselache kepleri, CMNH 6233 in The Braincase In Paleozoic Symmoriiform And Cladoselachian Sharks
Fig. 59. Cladoselache kepleri, CMNH 6233, Cleveland Shale, Berea, Ohio. Ventral view of braincase partly overlain by palatoquadrate. Scale bar 5 10 mm.
Fig. 58. Cladoselache kepleri, CMNH 5769 in The Braincase In Paleozoic Symmoriiform And Cladoselachian Sharks
Fig. 58. Cladoselache kepleri, CMNH 5769, Cleveland Shale (late Devonian), Berea, Ohio. Ventral view of braincase. Scale bar 5 10 mm.
Fig. 47 in The Braincase In Paleozoic Symmoriiform And Cladoselachian Sharks
Fig. 47. Cobelodus aculeatus FMNH PF 7345. Silicone peel of braincase dorsal surface, anterior to top
Fig. 51 in The Braincase In Paleozoic Symmoriiform And Cladoselachian Sharks
Fig. 51. Outline dorsal views of the braincase in three specimens that have been referred to Stethacanthus, all from the Bear Gulch Limestone (Chesterian, late Pennsylvanian). A, Specimen referred to S. altonensis, MV 2830 (from Lund, 1974: fig. 3); B, specimen referred to S. cf. S. altonensis (from Lund, 1985: fig. 4); C, specimen referred to S. cf. S. productus (from Lund, 1985: fig. 1). Anterior to top. The original illustrations have been adjusted to approximately the same scale (scale bar 5 10 mm). See text for details.
Fig. 55 in The Braincase In Paleozoic Symmoriiform And Cladoselachian Sharks
Fig. 55. Falcatus falcatus MV 4793, part and counterpart, Bear Gulch Limestone. Head in lateral view
Fig. 39 in The Braincase In Paleozoic Symmoriiform And Cladoselachian Sharks
Fig. 39. Cobelodus aculeatus FMNH PF 7347. Enlarged image of braincase, positive print from an original X-ray by R. Zangerl. Scale bar 5 10 mm.
Fig. 42 in The Braincase In Paleozoic Symmoriiform And Cladoselachian Sharks
Fig. 42. ''Cobelodus'' contour-based surface rendering, ventral view with clipping plane introduced to remove parts of the basicranium, exposing the canal for the palatine ramus and the glossopharyngeal canal. Collapse of the basicranium below these structures (dashed white lines) creates paired ridges and depressions in compression fossils (see fig. 37).
Fig. 38. A in The Braincase In Paleozoic Symmoriiform And Cladoselachian Sharks
Fig. 38. A new silicone cranial endocast of Cobelodus aculeatus FMNH PF 3090. A, lateral view, right side; B, anterior view; C, dorsal view; D, ventral view; E, posterior view.
Fig. 32 in The Braincase In Paleozoic Symmoriiform And Cladoselachian Sharks
Fig. 32. Lateral view of the endocast in ''Cobelodus'' (A) and Cladodoides (B), showing different angular relationships of the plane containing the external semicircular canal (heavy line) to the endocast long axis (thinner line). Not to scale.
Fig. 43 in The Braincase In Paleozoic Symmoriiform And Cladoselachian Sharks
Fig. 43. ''Cobelodus'' CT scan, three-slice mode (digital reslicing of original transverse CT scan slices), showing orthographic views of the glossopharyngeal canal and surrounding cartilage. A, transverse slice; B, sagittal slice; C, horizontal slice. White lines correspond to x-y-z axes. Compare horizontal slice with figs. 37 and 38.
Fig. 30 in The Braincase In Paleozoic Symmoriiform And Cladoselachian Sharks
Fig. 30. FMNH PF 13242 (''Cobelodus''). Endocast of otico-occipital and labyrinth regions, oblique orthographic views. A, postero-dorsolateral view; B, anterolateral view.
Fig. 28 in The Braincase In Paleozoic Symmoriiform And Cladoselachian Sharks
Fig. 28. FMNH PF 13242 (''Cobelodus''). Cranial endocast, anterior views. A, entire endocast; B, endocast with anterior half removed.
Fig. 24 in The Braincase In Paleozoic Symmoriiform And Cladoselachian Sharks
Fig. 24. FMNH PF 13242 (''Cobelodus''). Contour-based surface reconstruction of cranial endocast generated from CT-scan slices. Right side, with semicircular canals and ampullae.
Fig. 23 in The Braincase In Paleozoic Symmoriiform And Cladoselachian Sharks
Fig. 23. Spino-occipital nerve canals in Cladodoides wildungensis for comparison with previous figure. A–D, CT scan slices through successive canals. Canal 1 is represented only by a slight embayment in the reconstruction and is poorly resolved in sectional views. A, canal 2 (does not widen or divide; CT scan slice 246); B, canal 3 (divides into dorsal and ventral branches; slice 260); C, canal 4 (widens externally but does not divide; slice 272); D, canal 5 (does not widen or divide; slice 287); E, medial view of digital reconstruction, showing location of spino-occipital canals.
Fig. 25 in The Braincase In Paleozoic Symmoriiform And Cladoselachian Sharks
Fig. 25. FMNH PF 13242 (''Cobelodus''). Cranial endocast, left side, with semicircular canals removed
Fig. 22 in The Braincase In Paleozoic Symmoriiform And Cladoselachian Sharks
Fig. 22. Spino-occipital nerve canals in ''Cobelodus''. A–E, CT scan slices through successive canals. A, canal 1 (incompletely formed; CT scan slice 163); B, canal 2 (slice 172); C, canal 3 (slice 181); D, canal 4 (slice 190); E, canal 5 (slice 201); F, medial view of digital reconstruction, showing location of spinooccipital canals.
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International Brain Laboratory public data
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OpenNeuro
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