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Dakotamys

Mammalia - Multituberculata

Taxonomy
Dakotamys was named by Eaton (1995) [Tedrow and Korth 1997 attempt to "name" this genus for an aplodontid]. It is not extant. Its type is Dakotamys malcolmi.

It was assigned to Multituberculata by Eaton (1995) and McKenna and Bell (1997); to Cimolodonta by Eaton and Cifelli (2001); and to Cimolodonta by Kielan-Jaworowska and Hurum (2001), Kielan-Jaworowska et al. (2004) and Eaton (2009).

Species
D. malcolmi (type species)

Synonymy list
YearName and author
1995Dakotamys Eaton
1997Dakotamys McKenna and Bell
2001Dakotamys Eaton and Cifelli p. 496–497
2001Dakotamys Kielan-Jaworowska and Hurum p. 416
2004Dakotamys Kielan-Jaworowska et al. pp. 254, 321 fig. 8.36E
2009Dakotamys Eaton

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
—Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
—Reptiliomorpha
—Anthracosauria
RankNameAuthor
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
subclassSynapsida
—Therapsida()
infraorderCynodontia()
—Mammaliamorpha
—Mammaliaformes
classMammalia
—Allotheria()
orderMultituberculataCope 1884
suborderCimolodonta()
genusDakotamys

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. †Dakotamys Eaton 1995
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†Dakotamys malcolmi Eaton 1995
Diagnosis
ReferenceDiagnosis
J. G. Eaton and R. L. Cifelli 2001p4 with lower H:L than in Cedaromys, Paracimexomys or cf. Paracimexomys. First molars with low cusp formulae (m1-4:3; M1- 4-5:4: 1-2); less than cf. Paracimexomys perplexus but similar to Paracimexomys priscus. Short internal row present on M1, unlike Cedaromys or Janumys. Cusps of external and medial rows on M1 offset (not aligned transversely), unlike Cimexomys. Second to first molar length ratios (0.85) less than in Paracimexomys, cf. Paracirnexomys, Janumys, and Cedaromys but greater than in Bryceomys. Differs from Paracimexomys priscus in having strongly ribbed molar cusps, cusp rows on M1 not diverging anteriorly, and central valley on ml straight rather than sinuous. P4s with labial expanded anteroexternal platform, unlike Cedaromys, Bryceomys, and Janumys, and with rate of cusp climb (CR = 0.38) higher than in Janumys but lower than in Cedaromys, Bryceomys, and cf. Paracimexomys perplexus.