Entodacrya

From Freepedia

? Entodacrya Fossil Range: Eocene - Recent
Image:Laonastes aenigmamus.jpg Laotian Rock Rat drawing by R.J. Timmins
Scientific classification
Kingdom: Animalia Phylum: Chordata Class: Mammalia Order: Rodentia Suborder: Entodacrya Landry, 1999
Families
Ctenodactylidae †Tammquammyidae †Diatomyidae †Yuomyidae †Chapattimyidae †Tsaganomyidae Laonastidae †"Baluchimyinae" Hystricidae †Myophiomyidae †Diamantomyidae †Phiomyidae †Kenyamyidae Petromuridae Thryonomyidae Bathyergidae †Bathyergoididae Erethizontidae Dasyproctidae Agoutidae †Eocardiidae Dinomyidae Caviidae Hydrochaeridae Octodontidae Ctenomyidae Echimyidae Myocastoridae Capromyidae †Heptaxodontidae Chinchillidae †Neoepiblemidae Abrocomidae

Entodacrya also known as Ctenohystrica is a taxonomic hypothesis uniting the gundis with the hystricognath rodents. There is considerable morphological support for this relationship and strong molecular support. If true, this hypothesis renders the traditional view of Sciurognathi invalid as it becomes a paraphyletic group.

Families

The following list of families is based on the taxonomy of Marivaux et al. (2002; 2004) who subjected a number of early fossil rodents to parsimony analysis and recovered support for the Entodacrya hypothesis. Their results rendered the suborder Sciuravida as defined by McKenna and Bell (1997) to be polyphyletic and invalid. The symbol "†" is used to indicate groups where no living members survive.

• Suborder Entodacrya
  • Ctenodactylidae - gundis
  • †Tammquammyidae
  • †Diatomyidae
  • †Yuomyidae
  • †Chapattimyidae
  • Hystricognathiformes
    • †Tsaganomyidae
    • Hystricognathi - true hystricognaths
      • Laonastidae - incertae sedis - Laotian Rock Rat
      • †"Baluchimyinae"
      • Hystricidae - Old World porcupines
      • Phiomorpha
        • †Myophiomyidae
        • †Diamantomyidae
        • †Phiomyidae
        • †Kenyamyidae
        • Petromuridae - Dassie Rat
        • Thryonomyidae - cane rats
        • Bathyergidae - blesmols
        • †Bathyergoididae
      • Caviomorpha - New World hystricognaths
        • Superfamily Erethizontoidea
          • Erethizontidae - New World porcupines
        • Superfamily Cavioidea
          • Dasyproctidae - agoutis and acouchis
          • Agoutidae - pacas
          • †Eocardiidae
          • Dinomyidae - pacarana
          • Caviidae - cavies
          • Hydrochaeridae - capybara
        • Superfamily Octodontoidea
          • Octodontidae - degus and relatives
          • Ctenomyidae - tuco-tucos
          • Echimyidae - spiny rats
          • Myocastoridae - nutria
          • Capromyidae - hutias
          • †Heptaxodontidae - giant hutias
        • Superfamily Chinchilloidea
          • Chinchillidae - chinchillas and viscachas
          • †Neoepiblemidae
          • Abrocomidae - chinchilla rats

References

• Huchon, D. E. J. P. Douzery. 2001. From the Old World to the New World: A molecular chronicle of the phylogeny and biogeography of hystricognath rodents. Molecular Phylogenetics and Evolution, 20:238-251.
• Landry, S. O. J. 1999. A proposal for a new classification and nomenclature for the glires. Mitt. Mus. Nat. Kd. Berl. Zool. Reihe, 75:283-316.
• Marivaux, L., M. Vianey-Liaud, and J.-J. Jaeger. 2004. High-level phylogeny of early Tertiary rodents: dental evidence. Zoological Journal of the Linnean Society, 142:105-134.
• Marivaux, L. J. L. Welcomme, M. Vianey-Liaud, and J.J. Jaeger. 2002. The role of Asia in the origin and diversification of hystricognathous rodents. Zoologica Scripta, 31:225-239.
• McKenna, Malcolm C., and Bell, Susan K. 1997. Classification of Mammals Above the Species Level. Columbia University Press, New York, 631 pp. ISBN 0-231-11013-8