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Calomys (Bensonomys) eliasi

Mammalia - Rodentia - Cricetidae

Taxonomy
Peromyscus eliasi was named by Hibbard (1937) [also said to be 1938]. Its type locality is Rexroad KU Locality 2, which is in a Blancan terrestrial horizon in the Rexroad Formation of Kansas.

It was synonymized subjectively with Bensonomys arizonae by Hibbard (1950); it was recombined as Calomys (Bensonomys) eliasi by Baskin (1978); it was recombined as Calomys eliasi by Czaplewski (1987); it was recombined as Bensonomys eliasi by Hibbard (1956), Kurten and Anderson (1980) and Martin et al. (2002).

Sister species lacking formal opinion data

View classification of included taxa

Synonymy list
YearName and author
1937Peromyscus eliasi Hibbard
1956Bensonomys eliasi Hibbard p. 185 figs. Fig, 12A
1978Calomys (Bensonomys) eliasi Baskin p. 126
1980Bensonomys eliasi Kurten and Anderson p. 248
1987Calomys eliasi Czaplewski
2002Bensonomys eliasi Martin et al.

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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()
RankNameAuthor
infraorderCynodontia()
Epicynodontia
infraorderEucynodontia
Probainognathia
Mammaliamorpha
Mammaliaformes
classMammalia
subclassTribosphenida()
infraclassEutheria()
Placentalia
EuarchontogliresMurphy et al. 2001
Glires()
orderRodentia
infraorderMyodontaSchaub 1958
superfamilyMuroideaIlliger 1811
familyCricetidaeFischer von Waldheim 1817
subfamilySigmodontinaeWagner 1843
genusCalomys
subgenusBensonomys
specieseliasi(Hibbard 1937)

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
Hibbard 1956This species was first taken from the Rexroad formation at Locality
2, Meade County, Kansas. Later collecting at Localities 2 and 3
has furnished additional specimens, and these have been compared
with the holotype and the paratype of Bensonomys arizonae. It was
found that B. eliasi is a valid species. In both young adult and adult
specimens tbe lower incisor of B. eliasi has a greater transverse width than the lower incisor of B. arizonae. m1 in B. eliasi is more rectangular than the m1 of B. arizonae, which tends to be triangular , with the apex of the triangle at the anteroconid. The reëntrant valleys of m1. and m2 in B. eliasi are broader than those of B. arizonae. The holotype of Peromyscus eliasi (KUMVP 3941) is a fragmentary left lower jaw, with m1-m3, of a very old adult. The teeth are worn down to their bases, and only the outlines of a few of the reentrant angles and cusps remain.