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Natchitochia jonesi

Mammalia - Artiodactyla - Protocetidae

Taxonomy
Natchitochia jonesi was named by Uhen (1998). Its type specimen is USNM 16805, a partial skeleton (vertebrae), and it is a 3D body fossil. Its type locality is Natchitoches SH 478, which is in a Bartonian marine sandstone in the Cook Mountain Formation of Louisiana.

Synonymy list
YearName and author
1998Natchitochia jonesi Uhen pp. 664-665 figs. 2-5
2008Natchitochia jonesi McLeod and Barnes p. 93
2008Natchitochia jonesi Uhen p. 560
2014Natchitochia jonesi Uhen p. 211

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
OlfactoresJefferies 1991
subphylumVertebrata
Gnathostomata()
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda()
Reptiliomorpha
Anthracosauria
Batrachosauria()
RankNameAuthor
Cotylosauria()
Amniota
Synapsida()
Therapsida()
infraorderCynodontia()
Epicynodontia
infraorderEucynodontia
Probainognathia
Mammaliamorpha
Mammaliaformes
classMammalia
orderArtiodactyla()
Cetacea()
familyProtocetidae
genusNatchitochia
speciesjonesi

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

Diagnosis
ReferenceDiagnosis
M. D. Uhen 2014The vertebrae of Natchitochia jonesi are 10%–25% larger in linear dimensions than the largest vertebrae of all other protocetids for which corresponding vertebrae are known (see Fig. 1 for comparison and Appendix 1 for measurements). The vertebrae of N. jonesi also lack the ventral keel seen in those vertebrae assigned to Pappocetus, and the ribs are smaller and more gracile than the ribs assigned to Pappocetus (Hal- stead and Middleton 1974). Natchitochia jonesi differs from Georgiacetus vogtlensis in the in that N. jonesi possesses a first sacral vertebra bearing a large auricular surface on S1 that articulates with the innominate, as well as small, triangular articular surfaces on the posterior margin of the transverse process that articulates with the second sacral vertebra. G. vogtlensis lacks both of these features.