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Ophiomys magilli

Mammalia - Rodentia - Cricetidae

Taxonomy
Ophiomys magilli was named by Hibbard (1972) [in Skinner and Hibbard; used by Chaline et al. 1999 without justification]. Its type specimen is UMMP V57187, a tooth (m1 inf. sin.), and it is a 3D body fossil.

It was recombined as Mimomys magilli by Repenning (1987), Korth (1994) and Mou (1997).

Synonymy list
YearName and author
1972Ophiomys magilli Hibbard
1980Ophiomys magilli Kurten and Anderson p. 255
1987Mimomys magilli Repenning
1994Mimomys magilli Korth
1997Mimomys magilli Mou
2002Ophiomys magilli Martin et al.

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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
Mammaliaformes
classMammalia
RankNameAuthor
Theriamorpha(Rowe 1993)
Theriiformes()
Trechnotheria
Cladotheria
Zatheria
subclassTribosphenida()
subclassTheria
Eutheria()
Placentalia
Boreoeutheria
EuarchontogliresMurphy et al. 2001
GliriformesWyss and Meng 1996
Glires()
Simplicidentata()
orderRodentiaBowdich 1821
infraorderMyodontaSchaub 1958
superfamilyMuroideaIlliger 1811
Eumuroida
familyCricetidaeFischer von Waldheim 1817
subfamilyArvicolinae()
genusOphiomysForsyth-Major 1902
speciesmagilliHibbard 1972

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.

Ophiomys magilli Hibbard 1972
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Diagnosis
ReferenceDiagnosis
Hibbard 1972Rooted molars, lacking cement, with very short dentine tracts. First lower molar with three anlternating triangles and complcated anterior loop. Smaller than Ogmodontomys poaphagus and larger than Ophiomys taylori, but with higher crowned teeth for its size. Apex of second and third lingual and and second labial reentrant angles constricted and directed more sharply anteriorly. Thinned enamel on anterior borders of these reentrant angles. These characters distinguish Ophiomys magilli from known species of Ogmodontomys, Cosomys and Ophiomys.
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialsubc
Locomotion: actively mobilec
Life habit: ground dwellingo
Diet: herbivoreo
Reproduction: viviparoussubc
Created: 2005-08-26 14:04:46
Modified: 2005-08-26 16:04:46
Source: o = order, subc = subclass, c = class, subp = subphylum
References: Lillegraven 1979, Nowak 1999, Carroll 1988, Hendy et al. 2009, Ji et al. 2002

Age range: Blancan or 4.90000 to 1.80000 Ma

Collections (2 total)


Time interval Ma Country or state Original ID and collection number
Blancan4.9 - 1.8USA (Nevada) Ophiomys magilli (19965)
Blancan4.9 - 1.8USA (Nebraska) Ophiomys magilli (19963)