. Annals of the Carnegie Museum. Carnegie Museum; Carnegie Museum of Natural History; Natural history. FlGS. 3 and 4. Centruiii of last ? dorsal seen from left side and above. (No. 578.) One half natural size. trum described by Marsh as a posterior dorsal and figured in plate XL., Figs. 4 and 5, of his Dinosaurs of North America, in reality pertained to an anterior dorsal, as is evidenced by its strongly opisthoccelian character and the more extended pleurocentral cavities, while the dorsal centrum figured in the text as pertaining to Pleitroccelus was from the mid-dorsal region, as is evidenc
. Annals of the Carnegie Museum. Carnegie Museum; Carnegie Museum of Natural History; Natural history. FlGS. 3 and 4. Centruiii of last ? dorsal seen from left side and above. (No. 578.) One half natural size. trum described by Marsh as a posterior dorsal and figured in plate XL., Figs. 4 and 5, of his Dinosaurs of North America, in reality pertained to an anterior dorsal, as is evidenced by its strongly opisthoccelian character and the more extended pleurocentral cavities, while the dorsal centrum figured in the text as pertaining to Pleitroccelus was from the mid-dorsal region, as is evidenced by its less decided opistho- coelian nature and smaller lateral cavities. In Figs. 5 and 6 are shown lateral and superior views of a posterior caudal centrum, pertaining to about the same region as that figured by Marsh in plate XL., figs. 8 and 9, of his Dinosaurs of North America, from a specimen found in the Potomac beds of Maryland. The pres- ent specimen was found by Mr. Gilmore in the Atlantosaurus beds, on Sheep Creek, Wyo., but in a different quarry from that which furnished the dorsal and cervical centra figured al) Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Carnegie Museum; Carnegie Museum of Natural History. [Pittsburgh] : Published by authority of the Board of Trustees of the Carnegie Institute
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