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Kirkomys

Mammalia - Rodentia - Florentiamyidae

Synonymy list
YearName and author
1984Kirkomys Wahlert
1997Kirkomys McKenna and Bell
2007Kirkomys Korth and Branciforte p. 186
2014Kirkomys Korth p. 386
2022Kirkomys Korth et al.

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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()
RankNameAuthor
Mammaliamorpha
Mammaliaformes
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
familyFlorentiamyidaeWood 1936
genusKirkomys

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.

G. †Kirkomys Wahlert 1984
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Kirkomys martintau Korth 2008
Kirkomys miriamae Korth et al. 2022
Kirkomys nebraskensis Wood 1937
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Invalid names: Kirkomys milleri Wahlert 1984 [synonym]
Diagnosis
ReferenceDiagnosis
W. W. Korth and C. Branciforte 2007Skull features distinct from other florentiamyines (from Wahlert 1984): no flange on frontals above orbits; posterior palatine, dorsal palatine, optic and sphenopalatine foramina more anteriorly placed; incisive foramen smaller (length approximately 12% total length of upper diastema). Dental features: cheek teeth submesodont, similar in crown height to Proheteromys but cusps more bunodont; premolars sim- ple; P4 with simple protoloph (consisting of circular protocone and occasional minute cuspules); P4 consists of four main, subequal cusps (no protoconid) with occa- sional minute accessory cuspules; transverse valley of molars relatively shallow, lophs uniting centrally after only moderate wear; lingual cingulum on upper molars continuous (not interrupted by transverse valley).
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, Hendy et al. 2009, Nowak 1999, Carroll 1988, Lillegraven 1979

Age range: base of the Late/Upper Chadronian to the top of the early Late Arikareean or 37.20000 to 20.43000 Ma

Collections (9 total)


Time interval Ma Country or state Original ID and collection number
Late/Upper Chadronian - Orellan37.2 - 33.3USA (Nebraska) K. miriamae (230806)
Whitneyan33.3 - 30.8USA (Nebraska) K. milleri (17323) Proheteromys nebraskensis (17393)
Whitneyan33.3 - 30.8USA (South Dakota) K. martintau (170168) Proheteromys nebraskensis (17336 17337 17338)
early Early Arikareean30.8 - 20.43USA (Nebraska) Proheteromys nebraskensis (156729)
early Early Arikareean - early Late Arikareean30.8 - 20.43USA (California) K. sp. (175251)