Manospondylus gigas, Cope, 1892

E. D. Cope., 1892, Fourth note on the Dinosauria of the Laramie., The American Naturalist 26, pp. 756-758 : 757

publication ID 10.5281/zenodo.1037499


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Manospondylus gigas

Gen. et sp. nov.

Manospondylus gigas .— Gen. et sp. nov. Char. Gen.—

Dorsal vertebra with short anteroposterior diameter, and gently concave articular faces. Neurapophyses coössified. At the superior part of the centrum, a deep entering fossa; surfaces of circumference otherwise uninterrupted. Tissue of centrum at borders of articular faces coarsely vesicular. The form of these vertebra indicates that this genus is allied to the Agathaumidae rather than the Hadrosauridae . No genus of either family known to me possesses the fossae at the base of the neural arch.

Char. specif.— Dorsal centrum a little deeper than wide. Lateral surfaces smooth.

Diameters of centrum. mm.
Articular face { vertical 205
transverse 200
Anteroposterior 90

Two dorsal vertebra are the only remains which I can refer to this species, which is the most gigantic of the Dinosauria of the Laramie known to me. In the same neighborhood, but several hundred yards distant, I discovered a huge supratemporal bone, which differs from those of some of the allied genera in having a simple undulate free border, without tuberosities or processes. Its form is similar to that of Agathaumas , i.e. as broad as long posterior to the quadrate suture. There is no evidence that it belongs to this species.