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Saghacetus osiris

Mammalia - Cetacea - Basilosauridae

Taxonomy
Zeuglodon osiris was named by Dames (1894) [Berlin 16, MNB = Musem für Naturkende der Humboldt-Universität]. Its type specimen is MNB 28388, a mandible, and it is a 3D body fossil. Its type locality is Zeuglodonberg, which is in a Priabonian lagoonal claystone/limestone in the Qasr el-Sagha Formation of Egypt. It is the type species of Saghacetus.

It was recombined as Basilosaurus osiris by Trouessart (1904); it was recombined as Dorudon osiris by Kellogg (1936), Gingerich (1991); it was recombined as Saghacetus osiris by Gingerich (1992), Uhen (1998), Uhen (2002), van Vliet (2004), Uhen (2004), McLeod and Barnes (2008), Gingerich (2008), Uhen (2009), Schouten (2011), Uhen (2018).

Synonyms
Synonymy list
YearName and author
1894Zeuglodon osiris Dames p. 18
1898Zeuglodon osiris Trouessart p. 1010
1903Zeuglodon zitteli Stromer p. 82
1904Basilosaurus osiris Trouessart p. 753
1906Zeuglodon osiris Andrews p. 236
1908Zeuglodon osiris Stromer p. 5
1914Zeuglodon osiris Abel p. 220
1914Zeuglodon zitteli Abel p. 220
1923Zeuglodon sensitivus Dart p. 618
1923Zeuglodon elliotsmithii Dart p. 625
1925Zeuglodon osiris Zittel p. 85
1925Zeuglodon zitteli Zittel p. 85
1936Dorudon osiris Kellogg p. 184
1936Dorudon zitteli Kellogg p. 212
1936Dorudon elliotsmithii Kellogg p. 220
1936Dorudon sensitivus Kellogg p. 221
1991Dorudon osiris Gingerich p. 214
1992Saghacetus osiris Gingerich p. 73
1998Saghacetus osiris Uhen p. 39
2002Saghacetus osiris Uhen p. 79
2004Saghacetus osiris Uhen p. 12
2004Dorudon elliotsmithii van Vliet p. 143
2004Dorudon sensitivus van Vliet p. 143
2004Dorudon zitteli van Vliet p. 143
2004Saghacetus osiris van Vliet p. 143
2008Saghacetus osiris Gingerich p. 109 figs. Table 1
2008Saghacetus osiris McLeod and Barnes p. 93
2009Saghacetus osiris Uhen p. 93
2011Saghacetus osiris Schouten p. 18
2018Saghacetus osiris Uhen

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
—Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
—Reptiliomorpha
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
subclassSynapsida
—Therapsida()
infraorderCynodontia()
—Mammaliamorpha
RankNameAuthor
—Mammaliaformes
classMammalia
—Cladotheria
—Zatheria
subclassTribosphenida()
subclassTheria
—Eutheria()
—Placentalia
—Boreoeutheria
—Laurasiatheria
—Scrotifera
—Euungulata
—Artiodactylamorpha
—Artiodactyla()
—Whippomorpha
orderCetacea
—Pelagiceti
familyBasilosauridae
genusSaghacetus
speciesosiris()

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.

†Saghacetus osiris Dames 1894
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Invalid names: Dorudon elliotsmithii Dart 1923 [synonym], Dorudon sensitivus Dart 1923 [synonym], Dorudon zitteli Stromer 1903 [synonym]
Diagnosis
ReferenceDiagnosis
P. D. Gingerich 1992thoracic vertebrae are normally proportioned but posterior lumbars and anterior caudals are distinctly long in comparison to centrum height and breadth