Neosaurus
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Neosaurus ('New Lizard') is an extinct genus of pelycosaur-grade synapsids from the Late Carboniferous-Early Permian of the Jura region of France. It is known only from a partial maxilla or upper jaw bone and an associated impression of the bone.[1] The teardrop shape of the teeth in the jaw indicate that Neosaurus belongs to the family Sphenacodontidae, which includes the better-known Dimetrodon from the Southwestern United States. The maxilla was first attributed to an early diapsid reptile in 1857,[2][3] and later a crocodylomorph in 1869,[4] before finally being identified as a sphenacodont synapsid in 1899,[5] a classification that still holds today.[6]
A species of the hadrosaur dinosaur Hypsibema, H. missouriensis, is also called Neosaurus, although because the name was already in use, that species was renamed Parrosaurus before being reassigned to Hypsibema.[7]
References
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- ↑ Nopcsa, F. 1923. "Die Familien der Reptilien". Fortschritte der Geologie und Palaeontologie 2 : 1–210
- ↑ Coquand, H. 1857. "Mémoire geologique sur l'existence du terrain permien et du représentant du grès vosgien dans le département de Saône-et-Loire et dans les montagnes de la Serre (Jura)". Bulletin de la Société geologique de France 14 : 13–47
- ↑ Coquand, H. 1858. "Mémoire geologique sur l'existence du terrain permien et du représentant du grès vosgien dans le département de Saône-et-Loire, ainsi que dans les montagnes de la Serre (Jura)". Mémoires de la Société d'Émulation du département du Doubs 2 : 1–40
- ↑ Gervais, P. 1869. Zoology and paléontologie générales. Nouvelles recherches sur les animaux vertébrés vivants ou fossils, Première série . 263 pp. Arthus Bertrand, Paris
- ↑ Baur, G. and Case, EC 1899. "The history of the Pelycosauria, with a description of the genus Dimetrodon, Cope". Transactions of the American Philosophical Society, New Series 20 : 5–62
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