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Cyclopidius californicus

Mammalia - Merycoidodontidae

Taxonomy
Leptauchenia (Sespia) californica was named by Stock (1930). Its type specimen is UCMP 27720, a partial skull (Facial and palatal portions of skull and portions of horizontal rami of lower jaw), and it is a 3D body fossil. Its type locality is Morgan Canyon, South Mountain (UCMP V-75003), which is in an Arikareean fluvial-lacustrine sandstone/mudstone in the Sespe Formation of California.

It was recombined as Cyclopidius californica by Schlaikjer (1935); it was recombined as Cyclopidius californicus by Thorpe (1937); it was synonymized subjectively with Sespia nitida by Lander (1983) and Lander (1998); it was recombined as Sespia californica by Schultz and Falkenbach (1968), Mason and Swisher (1989), CoBabe (1996), Hoffman and Prothero (2003), Hoffman and Prothero (2004) and Stevens and Stevens (2007).

Synonymy list
YearName and author
1930Leptauchenia (Sespia) californica Stock
1935Cyclopidius californica Schlaikjer
1937Cyclopidius californicus Thorpe p. 242 figs. PLXXXVII, figs. 1-5
1968Sespia californica Schultz and Falkenbach p. 241
1989Sespia californica Mason and Swisher p. 3
1996Sespia californica CoBabe p. 578
2003Sespia californica Hoffman and Prothero
2004Sespia californica Hoffman and Prothero p. 156 figs. Figures 1-2, Tables 1-2
2007Sespia californica Stevens and Stevens p. 158

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Life
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
Theriamorpha(Rowe 1993)
Theriiformes()
Trechnotheria
Cladotheria
Zatheria
subclassTribosphenida()
subclassTheria
Eutheria()
Placentalia
Boreoeutheria
Laurasiatheria
Scrotifera
Euungulata
Artiodactylamorpha
Artiodactyla()
familyMerycoidodontidae
subfamilyLeptaucheniinaeSchultz and Falkenbach 1940
genusCyclopidius
speciescalifornicus()

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.

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Diagnosis
ReferenceDiagnosis
J. M. Hoffman and D. R. Prothero 2004Smallest known species of Sespia; infraorbital fora-men above anterior border of P4.