Basic info Taxonomic history Classification Relationships
Morphology Ecology and taphonomy External Literature Search Age range and collections

Eocetus

Mammalia - Artiodactyla - Protocetidae

Synonyms
Synonymy list
YearName and author
1904Eocetus Fraas
1904Mesocetus Fraas
1908Eocetus Stromer p. 148
1914Eocetus Abel p. 220
1919Eocetus Abel p. 751
1925Eocetus Zittel p. 84
1928Eocetus Kellogg p. 32 figs. Table 1
1936Eocetus Kellogg p. 231
1936Eocetus Slijper p. 540
1945Eocetus Simpson p. 100
1988Eocetus Carroll
1997Eocetus McKenna and Bell p. 370
1999Eocetus Uhen
2001Eocetus Uhen p. 136
2002Eocetus Sepkoski, Jr.
2002Eocetus Uhen p. 80
2005Eocetus Gingerich et al. p. 200
2008Eocetus McLeod and Barnes p. 93
2008Eocetus Uhen p. 560
2011Eocetus Uhen et al. p. 966
2012Eocetus Goldin et al. p. 105
2013Eocetus Goldin and Zvonok p. 254
2014Eocetus Uhen p. 1030
2015Eocetus Gao and Ni p. 156 figs. Table 1
2015Eocetus Gingerich and Zouhri p. 282
2016Eocetus Marx et al. p. 100
2017Eocetus Berta p. 159

Is something missing? Join the Paleobiology Database and enter the data

RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
subphylumVertebrata
superclassGnathostomata
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
genusEocetus

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 2001Eocetus is larger than all other protocetines for which the skull is known (Protocetus, Gaviacetus, Takracetus, Babiacetus,
and Georgiacetus). Based on the size of their vertebrae, Pappocetus and Natchitochia could rival Eocetus in skull length, but both have vertebrae assigned to them which are very different from those of Eocetus (Halstead and Middleton, 1974; Uhen, 1998b). The vertebrae of Eocetus have a distinctive pock-marked texture. The pock marks are actually small vascular channels that penetrate deeply into the bone. In addition, the centra, neural arches, neural spines, and transverse processes of the lumbar vertebrae are antero-posteriorly elongate, unlike the vertebrae of Pappocetus and Natchitochia.
M. D. Uhen 2008Eocetus is larger than all other protocetines, except possibly Pappocetus and Natchitochia, but both genera have vertebrae assigned to them that are very different from those of Eocetus (Halstead and Middleton, 1974; Uhen, 1998b). The bones of Eocetus have distinctive pock-marks, which are small vascular channels that penetrate deeply into the bone. In addition, the centra, neural arches, neural spines, and transverse processes of the lumbar vertebrae are antero-posteriorly elongated, unlike those of Pappocetus and Natchitochia.