Parrosaurus (from Greek υψι/hypsi, "high", and βεμα/bema, "step", meaning "high step") is a dubious genus of hadrosaurid ornithopod from the Late Cretaceous (late Campanian-Maastrichtian) of Missouri.
History and discovery[]
Parrosaurus was originally named Neosaurus missouriensis and classified as a member of Sauropoda by Gilmore and Stewart (1945).[1] However, the name Neosaurus was already in use for a genus of pelycosaur synapsid, and Gilmore (1945) changed Neosaurus Gilmore and Stewart, 1945 to Parrosaurus.[2] Later, Parrosaurus was referred to the hadrosaur genusHypsibema by Baird and Horner (1979) based on similarities with the lectotype caudal vertebra of Hypsibema crassicauda. However, new material unearthed at the type locality of P. missouriensis indicates that Parrosaurus is a distinct genus in its own right.[3][4]
References[]
- ^ Gilmore, C.W., and Stewart, D.R., 1945. A New Sauropod Dinosaur from the Upper Cretaceous of Missouri. Journal of Paleontology. Society for Sedimentary Geology. 19 (1): 23–29. JSTOR 1299165.
- ^ Gilmore, C.W., 1945. Parrosaurus, N. Name, Replacing Neosaurus Gilmore, 1945. Journal of Paleontology. Society for Sedimentary Geology. 19 (5): 540. JSTOR 1299009.
- ^ D. Baird and J. R. Horner, 1979, "Cretaceous dinosaurs of North Carolina", Brimleyana 2: 1-28.
- ^ Brownstein, CD. 2018. The biogeography and ecology of the Cretaceous non-avian dinosaurs of Appalachia. Palaeontologia Electronica 21.1.5A: 1-56.