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Neosaurus

From Wikipedia, the free encyclopedia
Extinct genus of synapsids

Neosaurus
Holotype
Scientific classificationEdit this classification
Domain:Eukaryota
Kingdom:Animalia
Phylum:Chordata
Clade:Synapsida
Family:Sphenacodontidae
Genus:Neosaurus
Nopsca, 1923
Type species
Neosaurus cynodus
(Gervais, 1869)
Synonyms

Neosaurus is an extinct genus ofpelycosaur-gradesynapsids from theLate Carboniferous-Early Permian of theJura region ofFrance. It is known only from a partialmaxilla or upper jaw bone and an associated impression of the bone.[1] The teardrop shape of the teeth in the jaw indicate thatNeosaurus belongs to the familySphenacodontidae, which includes the better-knownDimetrodon from theSouthwestern United States. The maxilla was first attributed to an earlydiapsid reptile in 1857,[2][3] and later acrocodylomorph in 1869,[4] before finally being identified as a sphenacodont synapsid in 1899,[5] a classification that still holds today.[6]

A species of thehadrosaurdinosaurHypsibema,H. missouriensis, is also calledNeosaurus, although because the name was already in use, that species was renamedParrosaurus before being reassigned toHypsibema.[7]

References

[edit]
  1. ^Nopcsa, F. 1923. "Die Familien der Reptilien". Fortschritte der Geologie und Palaeontologie 2 : 1–210
  2. ^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
  3. ^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
  4. ^Gervais, P. 1869. Zoology and paléontologie générales. Nouvelles recherches sur les animaux vertébrés vivants ou fossils, Première série . 263 pp. Arthus Bertrand, Paris
  5. ^Baur, G. and Case, EC 1899. "The history of thePelycosauria, with a description of the genusDimetrodon,Cope". Transactions of the American Philosophical Society, New Series 20 : 5–62
  6. ^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.
  7. ^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.
Tetrapodomorpha
Reptiliomorpha
Synapsida
    • see below↓
Caseasauria?
Eothyrididae
Caseidae
Varanopidae?
Mesenosaurinae
Varanodontinae
Metopophora
    • see below↓
Incertae sedis
Ennatosaurus tectonVaranodon agilis
Ophiacodontidae
Edaphosauridae
Palaeohatteriidae
Sphenacodontoidea
Sphenacodontidae
Therapsida
    • see below↓
Clepsydrops colletii

Gordodon kraineri

Secodontosaurus obtusidens
Biarmosuchia
Dinocephalia
Anomodontia
Gorgonopsia
Eutheriodontia
Therocephalia
Cynodontia
Incertae sedis
Raranimus dashankouensis
Neosaurus


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