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Peromyscus cochrani

Mammalia - Rodentia - Cricetidae

Taxonomy
Peromyscus cochrani was named by Hibbard (1955). Its type specimen is UMMP 27542, a mandible (right ramus with M1-M3), and it is a 3D body fossil. Its type locality is Jinglebob, which is in a Pleistocene terrestrial horizon in the Kingsdown Formation of Kansas.

Synonymy list
YearName and author
1955Peromyscus cochrani Hibbard
1980Peromyscus cochrani Kurten and Anderson p. 244

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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
RankNameAuthor
classMammalia
—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
genusPeromyscusGloger 1841
speciescochrani

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.

†Peromyscus cochrani Hibbard 1955
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Diagnosis
ReferenceDiagnosis
C. W. Hibbard 1955 mouse belonging to the subgenus Peromyscus the size of P. leucopus noveboracensis (Fischer). The dental characters are inter- mediate between Peromyscus cragini Hibbard, from the Cudahy fauna of Meade County, Kansas, and the Recent species P . leucopus and P . manicu- latus. Internal and external re-entrant valleys between the cusps are broader in P. cochrani than in P. leucopus and P. maniculatus. Mesostylid, ectostylid, mesostyle, and enterostyle are not as well developed as in Recent species of the subgenus Peromyscus. No lophids are present on the lower teeth, and the mesolophs on the upper molars are either only slightly developed or absent.