On the dorsal region of the vertebral column of a new dinosaur (indicating a new genus, Sphenospondylus), from the Wealden of Brook in the Isle of Wight, preserved in the Woodwardian Museum of the University of Cambridge / by H.G. Seeley.

  • Seeley, H. G. (Harry Govier), 1839-1909.
Date:
1883
Catalogue details

Licence: Public Domain Mark

Credit: On the dorsal region of the vertebral column of a new dinosaur (indicating a new genus, Sphenospondylus), from the Wealden of Brook in the Isle of Wight, preserved in the Woodwardian Museum of the University of Cambridge / by H.G. Seeley. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    [From the Quarterly Journal of the Geological Society for February 1883.] On the Dorsal Region of the Vertebral Column of a new Dinosaur (indicating a new Genus, Sphenospondylus), from the Wealden of Brook in the Isle of Wight, preserved in the Woodwardian Museum of the University 0/Cambridge. By- Prof. H. G. Seeley, F.R.S., F.G.S., &c., Professor of Geography in King’s College, London. This small series of six vertebral bones is remarkable for the great lateral compression of the centrum and the depressed form of the neural arch, and, as exhibiting the characters of the dorsal region in a new generic type, seems to me worthy of some notice. Fig. 1.—Dorsal Vertebra of Sphenospondylus, riejht side of type specimen in Woodwardian Museum. (One half nat. size.) b. Facet for head of rib. tp. Transverse process. The centrums of the vertebrae have an average length of 9 cen- tim. each ; the transverse width of the articular faces is about 7 cen- tim., with a vertical depth of at least 8 centim. ; but the lower part of the centrum is much compressed from side to sido, so as to have a wedge form, and terminates interiorly in a sharp longitudinal ridge. The articular margins of the centrums are moderately elevated. The transverse processes of the neural arch are at first directed back-