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Copemys dentalis

Osteichthyes - Rodentia - Cricetidae

Taxonomy
Peromyscus dentalis was named by Hall (1930). Its type specimen is UCCVP 29636, a mandible (dext with m1, m2), and it is a 3D body fossil. Its type locality is Fish Lake Valley, which is in a Clarendonian terrestrial horizon in the Esmeralda Formation of Nevada.

It was recombined as Copemys dentalis by Clark et al. (1964), Whistler and Burbank (1992), Kelly and Whistler (2014).

Entered
by J. Alroy on 2003-01-23; modified by L. van den Hoek Ostende on 2013-10-27

Synonymy list
YearName and author
1930Peromyscus dentalis Hall
1964Copemys dentalis Clark et al. p. 47 figs. Figure 8
1967Peromyscus dentalis Shotwell
1992Copemys dentalis Whistler and Burbank
2014Copemys dentalis Kelly and Whistler p. 26 figs. Figures 3, 13A-B, 14A-B; Table 7

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
classOsteichthyes
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
—Reptiliomorpha
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
subclassSynapsida
—Therapsida()
infraorderCynodontia()
RankNameAuthor
—Mammaliamorpha
—Mammaliaformes
classMammalia
—Cladotheria
—Zatheria
subclassTribosphenida()
subclassTheria
—Eutheria()
—Placentalia
—Boreoeutheria
—EuarchontogliresMurphy et al. 2001
—GliriformesWyss and Meng 1996
—Glires()
—Simplicidentata()
orderRodentia
familyCricetidaeFischer von Waldheim 1817
subfamilyNeotominaeMerriam 1894
genusCopemys
speciesdentalis()

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.

†Copemys dentalis Hall 1930
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Diagnosis
ReferenceDiagnosis
E. R. Hall 1930Size about as in Peromyscus maniculatus gambeli; masseteric fossa well defined; space between coronoid process and m3 wide and including deep fossa; horizontal ramus thick, especially at diastema; lower teeth wide, without accessory tubercles, and principal cusps low; m3 large; m2 large relative to m1.
J. B. Clark et al. 1964ossa between M3 and the coronoid process bears small nutritive foramina; mental foramen below diastema as in C. loxodon; anteroconid area of Mi simple as in C. longidens, but larger than in C. loxodon; mesolophid present or absent, and low when present ; no distinct hypoconulid on Mi ; metaconid of M2-3 far forward, eliminating lingual half of anterior cingulum as in C. loxodon; lower incisor narrow ; tooth measurements as given in Table 4.
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: Ji et al. 2002, Carroll 1988, Hendy et al. 2009, Nowak 1999, Lillegraven 1979

Age range: base of the Barstovian to the top of the Tortonian or 16.30000 to 7.24600 Ma

Collections (13 total)


Time interval Ma Country or state Original ID and collection number
Barstovian16.3 - 12.5USA (California) Peromyscus dentalis (19392)
Clarendonian12.5 - 9.4USA (Oregon) Peromyscus dentalis (18820 18831)
Clarendonian12.5 - 9.4USA (California) Copemys dentalis (19322 19323 19384 19517) Peromyscus dentalis (19145)
Clarendonian12.5 - 9.4USA (Nevada) Peromyscus dentalis (18845 type locality: 18888)
Tortonian11.63 - 7.246USA (California) Copemys dentalis, Copemys dentalis (204601)
Hemphillian9.4 - 4.7USA (California) Copemys dentalis (19309) Copemys dentalis, Copemys dentalis (163573)