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Basilosaurus

Taxonomy

Basilosaurus was named by Harlan (1834) [Sepkoski's age data: T Eo-m-u T Eo-u Sepkoski's reference number: 1022]. It is not extant. Its type is Zygorhiza kochii. It was considered monophyletic by Uhen (2008) and Martinez-Cacers and Muizon (2011).

It was replaced with Zeuglodon by Owen (1839), Muller (1849), Bronn (1853), Pictet (1853), Trouessart (1898) and Zittel (1925).

It was assigned to Prozeuglodontidae by Moustafa (1954); to Zeuglodontidae by Mchedlidze (1970); to Cetacea by Sepkoski (2002); to Cetaceamorpha by Spaulding et al. (2009); to Basilosaurinae by McKenna and Bell (1997), Uhen (1998), Uhen (2004), McLeod and Barnes (2008), Uhen (2008) and Uhen (2009); and to Basilosauridae by Gill (1871), Hay (1902), Trouessart (1904), Palmer (1904), Miller (1923), Hay (1930), Kellogg (1936), Simpson (1945), Halstead and Middleton (1972), Thurmond and Jones (1981), Carroll (1988), Benton (1993), Gingerich et al. (1997), Thewissen et al. (2001), Geisler and Sanders (2003), Fitzgerald (2010), Martinez-Cacers and Muizon (2011) and Uhen (2013).

Species

B. cetoides (syn. Alabamornis gigantea, Zeuglodon macrospondylus, Zeuglodon harlani, Zeuglodon ceti, Hydrargos sillimanii, Hydrarchos sillimani), B. drazindai, B. isis

Sister genera

Ancalecetus, Basilotritus, Chrysocetus, Cynthiacetus, Dorudon (syn. Prozeuglodon), Masracetus, Ocucajea, Saghacetus, Stromerius, Supayacetus, Zygorhiza

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Synonyms

Polyptychodon was named by Emmons (1858).

It was synonymized subjectively with Zeuglodon by Brandt (1874).
Hydrarchos was named by Koch (1845). It is not extant. It is the type genus of Hydrarchidae.

It was synonymized subjectively with Basilosaurus by Gibbes (1847), Gill (1871) and Kellogg (1936).

It was assigned to Basilosauridae by Palmer (1904).
Zeuglodon was named by Owen (1839). Its type is Basilosaurus cetoides.

It was synonymized objectively with Basilosaurus by Reichenbach (1847), Gibbes (1847), Gill (1871), Gill (1871), Trouessart (1904), Hay (1930), Kellogg (1936), Mchedlidze (1970), Gingerich (1992), Uhen (1998) and Uhen (2002).

It was assigned to Manatidae by De Kay (1842); to Cetacea by Bronn (1853); to Zeuglodontes by Pictet (1853); to Gymnorhinidae by Brandt (1874); to Basilosauridae by Palmer (1904); to Zeuglodontidae by Lydekker (1887), Cope (1890), Trouessart (1898), Andrews (1906), Abel (1913), Abel (1919) and Zittel (1925); and to Zeuglodontinae by Slijper (1936).
Hydrargos was named by Koch (1845). Its type is Hydrargos sillimanii.

It was synonymized objectively with Hydrarchos by Koch (1845); it was replaced with Hydrarchus by Muller (1849); it was synonymized subjectively with Basilosaurus by Kellogg (1936).
Hydrarchos harlani was named by Koch (1845). It is a compression fossil. Its type locality is Washington Old Court House, which is in a Priabonian marine marl in the Yazoo Formation of Alabama.

It was synonymized subjectively with Zeuglodon macrospondylus by Bronn (1853); it was synonymized subjectively with Basilosaurus cetoides by Kellogg (1936) and Thurmond and Jones (1981); it was considered a nomen nudum by Uhen (2005).
Alabamornis was named by Abel (1906).

It was synonymized subjectively with Zeuglodon by Lucas (1908); it was synonymized subjectively with Basilosaurus by Kellogg (1936).

It was assigned to Aves by Abel (1906).
Hydrarchus was named by Muller (1849). It is not extant.

It was synonymized subjectively with Zeuglodon by Bronn (1853), Pictet (1853) and Trouessart (1898); it was synonymized subjectively with Basilosaurus by Kellogg (1936).
Zyglodon was named by Hammerschmidt (1848). It is not extant.

It was synonymized subjectively with Zeuglodon by Bronn (1853), Pictet (1853) and Trouessart (1898); it was synonymized subjectively with Basilosaurus by Kellogg (1936).

Synonymy list

Year	Name and author
1834	Basilosaurus Harlan p. 403 figs. Plate XX
1839	Zeuglodon Owen p. 28
1842	Zeuglodon De Kay p. 123
1845	Hydrarchos Koch
1845	Hydrarchos harlani Koch
1845	Hydrargos Koch
1845	Hydrarchos harlani Koch p. 1
1849	Hydrarchus Muller p. 3
1853	Zeuglodon Bronn p. 763
1853	Zeuglodon Pictet p. 376
1858	Polyptychodon Emmons p. 219
1871	Basilosaurus Gill p. 125
1874	Zeuglodon Brandt p. III
1887	Zeuglodon Lydekker p. 49
1890	Zeuglodon Cope p. 602
1898	Zeuglodon Trouessart p. 1009
1902	Basilosaurus Hay p. 586
1904	Basilosaurus Palmer p. 134
1904	Hydrarchos Palmer p. 334
1904	Zeuglodon Palmer p. 715
1904	Basilosaurus Trouessart p. 753
1906	Alabamornis Abel pp. 450-458
1906	Zeuglodon Andrews p. 236
1913	Zeuglodon Abel p. 220
1919	Zeuglodon Abel p. 751
1923	Basilosaurus Miller p. 40
1925	Zeuglodon Zittel p. 84
1930	Basilosaurus Hay p. 569
1936	Basilosaurus Kellogg p. 14
1936	Zeuglodon Slijper
1945	Basilosaurus Simpson p. 100
1954	Basilosaurus Moustafa p. 87
1970	Basilosaurus Mchedlidze p. 50
1972	Basilosaurus Halstead and Middleton
1981	Basilosaurus Thurmond and Jones p. 193
1988	Basilosaurus Carroll
1993	Basilosaurus Benton p. 761
1997	Basilosaurus Gingerich et al.
1997	Basilosaurus McKenna and Bell p. 369
1998	Basilosaurus Uhen p. 31
2001	Basilosaurus Thewissen et al. p. 351 figs. Table 1
2002	Basilosaurus Sepkoski, Jr.
2003	Basilosaurus Geisler and Sanders p. 27
2004	Basilosaurus Uhen p. 12
2008	Basilosaurus McLeod and Barnes p. 94
2008	Basilosaurus Uhen p. 561
2009	Basilosaurus Spaulding et al. p. 3
2009	Basilosaurus Uhen p. 93
2010	Basilosaurus Fitzgerald p. 370 figs. Table 1
2011	Basilosaurus Martinez-Cacers and Muizon
2013	Basilosaurus Uhen

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