. Geological magazine. latter being much moreabbreviated and transversely expanded. The dorsal vertebrae of thehighly interesting Stegoceras and Stereocephalus are yet practicallyunknown. Compared with Scelidosaurus and Stegosaurns there exists [a,remarkable difference, for in the former the diapophyses are givenoff at a much lower point than in Polncanthns, while Stegosauru»seems to exaggerate this elevation of the diapophyses which separatesPolacantlius from Scelidosaurus. In a future paper on DacentunisI intend to come back once more to this question, and I shall tryto show why this elevati
. Geological magazine. latter being much moreabbreviated and transversely expanded. The dorsal vertebrae of thehighly interesting Stegoceras and Stereocephalus are yet practicallyunknown. Compared with Scelidosaurus and Stegosaurns there exists [a,remarkable difference, for in the former the diapophyses are givenoff at a much lower point than in Polncanthns, while Stegosauru»seems to exaggerate this elevation of the diapophyses which separatesPolacantlius from Scelidosaurus. In a future paper on DacentunisI intend to come back once more to this question, and I shall tryto show why this elevation of the neural arch (visible also in fossilSouth American sloths) was developed. Here I only wish todraw attention to the fact that in a recent paper (Ann. Mag. , 1904) Professor Seeley tries to explain this elevation bythe upward pressure of the lungs against the neural anchylosis of the lumbar vertebrae, a unique feature amongDinosaurs, strongly reminds one of the same character in Glyptodori,.
Size: 1561px × 1601px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1860, booksubjectgeology, bookyear1864
