Temporal range: Late Carboniferous-Early Permian, 300–295.5 Ma
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S
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C
P
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Holotype
Scientific classification
Domain:
Eukaryota
Kingdom:
Animalia
Phylum:
Chordata
Clade:
Synapsida
Family:
†Sphenacodontidae
Genus:
†Neosaurus Nopsca, 1923
Type species
†Neosaurus cynodus
(Gervais, 1869)
Synonyms
Geosaurus cynodus Gervais, 1869
Neosaurus 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]
^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
^Falconnet, J. (2013). "The sphenacodontid synapsid Neosaurus cynodus, and related material, from the Permo-Carboniferous of France". Acta Palaeontologica Polonica. doi:10.4202/app.2012.0105.
^Gilmore, Charles Whitney; Stewart, Dan R. (January 1945). "A New Sauropod Dinosaur from the Upper Cretaceous of Missouri". Journal of Paleontology. 19 (1). Society for Sedimentary Geology: 23–29. JSTOR 1299165.
Neosaurus 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...
first called Neosaurus missouriensis, was renamed to Parrosaurus missouriensis later that year by Gilmore and Stewart because the name "Neosaurus" was preoccupied...
name, now known as Nemegtomaia Nemegtomaia Nemegtonykus Nemegtosaurus "Neosaurus" – preoccupied name; renamed Parrosaurus, which is now Hypsibema Neosodon...
Originally described as a sauropod under the name Neosaurus missouriensis, but the name Neosaurus was preoccupied so it was renamed Parrosaurus missouriensis...
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