Pneumatoarthrus

Pneumatoarthrus Temporal range: Cretaceous
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Sauropsida
Order:	Testudines
Family:	Protostegidae
Genus:	Pneumatoarthrus
Binomial name
Pneumatoarthrus peloreus Cope, 1870

Pneumatoarthrus is a Cretaceous sea turtle first identified by Edward Drinker Cope as a hadrosaur in 1870. The fossils were found in the chalk beds of Kansas. It may be synonymous with the better-known , and therefore a close relative of the giant sea turtle Archelon.

Baird, D., 1978. "Pneumatoarthrus Cope, 1870, not a dinosaur but a sea-turtle". Proceedings of the Academy of Natural Sciences, Philadelphia, 129(4):71-81.

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