Mylagaulidae

Mylagaulidae
Mylagaulidae
Temporal range: 28–5 Ma
Late Oligocene - Early Pliocene
Reconstruction of Ceratogaulus hatcheri
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Infraclass: Eutheria
Superorder: Euarchontoglires
Order: Rodentia
Suborder: Sciuromorpha
Superfamily: Aplodontoidea
Family: Mylagaulidae
Cope, 1881
Subfamilies

see text

The Mylagaulidae or mylagaulids are a prehistoric family of sciuromorph rodents. They are known from the Neogene of North America and China[1]. The oldest member is the Late Oligocene Trilaccogaulus montanensis from living some 29 mya (million years ago), and the youngest was Ceratogaulus hatcheri - formerly in Epigaulus - which was found barely into the Pliocene, some 5 mya[2].

Systematics

Three subfamilies are recognized. The taxonomy of Galbreathia is not resolved; it might belong in Mylagaulinae but lacks the characteristic apomorphies[2].

Promylagaulinae

  • Genus Crucimys
  • Genus Promylagaulus
  • Genus Trilaccogaulus

Mesogaulinae

  • Genus Mesogaulus - includes Mylagaulodon

Mylagaulinae

  • Genus Alphagaulus (paraphyletic[2])
  • Genus Ceratogaulus - includes Epigaulus
  • Genus Hesperogaulus
  • Genus Mylagaulus
  • Genus Pterogaulus
  • Genus Umbogaulus

incertae sedis

  • Genus Galbreathia - basal in Mylagaulinae?

Footnotes

  1. ^ McKenna & Bell (1997)
  2. ^ a b c Hopkins (2005)

References

  • Hopkins, Samantha S.B. (2005): The evolution of fossoriality and the adaptive role of horns in the Mylagaulidae (Mammalia: Rodentia). Proc. R. Soc. B 272(1573): 1705-1713. doi:10.1098/rspb.2005.3171 PDF fulltext
  • McKenna, M. C, and S. K. Bell (1997): Classification of Mammals Above the Species Level. Columbia University Press. ISBN 023111012X