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Metatomarctus canavus

Mammalia - Carnivora - Canidae

Taxonomy
Cynodesmus canavus was named by Simpson (1932). Its type specimen is FSGS V5260, a mandible (right lower jaw with p2 and p4-m2), and it is a 3D body fossil. Its type locality is Thomas Farm, which is in a Hemingfordian terrestrial sandstone/claystone in the Alachua Formation of Florida.

It was recombined as Tomarctus canavus by White (1942), White (1947), Olsen (1956), Olsen (1962) and Wang (1994); it was recombined as Metatomarctus canavus by Wang et al. (1999) and Wang and Tedford (2008).

Synonyms
Synonymy list
YearName and author
1932Cynodesmus canavus Simpson p. 19 fig. 4
1941Tomarctus thomasi White p. 94 figs. pl. XIV, fig. 3
1942Nothocyon insularis White
1942Tomarctus canavus White
1947Tomarctus canavus White
1956Tomarctus canavus Olsen
1962Tomarctus canavus Olsen
1994Tomarctus canavus Wang p. 63
1999Metatomarctus canavus Wang et al.
2008Metatomarctus canavus Wang and Tedford

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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()
Cotylosauria()
Amniota
Synapsida()
Therapsida()
infraorderCynodontia()
Epicynodontia
RankNameAuthor
infraorderEucynodontia
Probainognathia
Mammaliamorpha
Mammaliaformes
classMammalia
subclassTribosphenida()
infraclassEutheria()
Placentalia
Laurasiatheria
Scrotifera
Ferae()
CarnivoramorphaWyss and Flynn 1993
CarnivoraformesFlynn et al.
orderCarnivoraBowditch 1821
suborderCaniformiaKretzoi 1943
superfamilyCanoideaSimpson 1931
familyCanidaeFischer 1817
subfamilyBorophaginaeSimpson 1945
tribeBorophaginiSimpson 1945
genusMetatomarctus
speciescanavus()

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
G. G. Simpson 1932A Cynodesmu.s of medium size, about as large as C. thoöides. Lower molar heels well basined, hypoconid and entoconid nearly equal. m1 not so long and narrow as in C. thoöides. m2 relatively large.
T. E. White 1941 (Tomarctus thomasi)A Tomarctus smaller than T. brevirostris and slightly larger than T. optatus; metaconule of Mt nearly as large as the pro- tocone; postero-external angle of M2 obtuse.