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Platacanthomyidae - Wikipedia

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From Wikipedia, the free encyclopedia

Family of rodents

The rodent family Platacanthomyidae, or Oriental dormice, includes the spiny dormice and the Chinese pygmy dormice. In spite of their appearance, these animals are not true dormice, but are part of the large and complex superfamily Muroidea. The platacanthomyids can be distinguished from the true dormice, because they have no premolars, giving them three cheek teeth, like their relatives, the Muroidea.

The evolutionary relationship of the Platacanthomyidae was uncertain until a molecular phylogenetic study found it to be the earliest extant lineage to branch within the superfamily Muroidea.^{[citation needed]} They can be distinguished from both the family Spalacidae and the Eumuroida (all non-spalacid and non-platacanthomyid muroids), by the distinct shape of their infraorbital canal and by the presence of multiple openings in the palate of the skull. On the basis of these two characteristics, they have been considered to be distinct from all other muroids. More work is needed to determine the evolutionary position of this subfamily.

The Platacanthomyidae contain three genera – Neocometes,^[1] Platacanthomys (spiny dormice), and Typhlomys^[2] (pygmy dormice) – but only three extant species.

Family Platacanthomyidae
- Genus †Neocometes
  - †Neocometes brunonis
  - †Neocometes orientalis
  - †Neocometes similis
- Genus Platacanthomys (spiny dormice)
  - †Platacanthomys dianensis
  - Platacanthomys lasiurus (spiny dormouse)
- Genus Typhlomys (pygmy dormice)
  - Typhlomys cinereus (Chinese pygmy dormouse)
  - Typhlomys nanus
  - †Typhlomys hipparionium
  - †Typhlomys intermedius
  - †Typhlomys macrourus
  - †Typhlomys primitivus

^ Lee, Yuong-Nam and Louis L. Jacobs. 2010. The Platacanthomyine Rodent Neocometes from the Miocene of South Korea and Its Paleobiogeographical Implications. Acta Palaeontologica Polonica 55(4):581-586. doi:10.4202/app.2010.0013
^ Jansa, S.A., T.C. Giarla, and B.K. Lim. 2009. The Phylogenetic Position of the Rodent Genus Typhlomys and the Geographic Origin of Muroidea. "Journal of Mammalogy": October 2009, Vol. 90, No. 5, pp. 1083-1094. doi:10.1644/08-MAMM-A-318.1

Musser, G. G. and M. D. Carleton. 2005. Superfamily Muroidea. pp. 894–1531 in Mammal Species of the World a Taxonomic and Geographic Reference. D. E. Wilson and D. M. Reeder eds. Johns Hopkins University Press, Baltimore.
Norris, R. W., K. Y. Zhou, C. Q. Zhou, G. Yang, C. W. Kilpatrick, and R. L. Honeycutt. 2004. The phylogenetic position of the zokors (Myospalacinae) and comments on the families of muroids (Rodentia). Molecular Phylogenetics and Evolution, 31:972-978.
Nowak, R. M. 1999. Walker's Mammals of the World, Vol. 2. Johns Hopkins University Press, London.
Steppan, S. J., R. A. Adkins, and J. Anderson. 2004. Phylogeny and divergence date estimates of rapid radiations in muroid rodents based on multiple nuclear genes. Systematic Biology, 53:533-553.

Extant families in order

Rodentia

Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Infraclass: Eutheria
Superorder: Euarchontoglires

Sciuromorpha
("Squirrel-like")

Castorimorpha
("Beaver-like")

Castoroidea: Castoridae (Beavers)

Geomyoidea: Geomyidae (Pocket gophers); Heteromyidae (Kangaroo rats and mice, pocket mice)

Myomorpha
("Mouse-like")

Dipodoidea: Dipodidae (Jerboas, jumping mice and birch mice)

Muroidea: Platacanthomyidae (Oriental dormice); Spalacidae (Zokors, bamboo rats, mole rats, blind mole rats); Calomyscidae (Mouse-like hamsters); Nesomyidae (Malagasy rats and relatives); Cricetidae (Hamsters and relatives); Muridae (House mouse and relatives)

Anomaluromorpha
("Anomalure-like")

Hystricomorpha
("Porcupine-like")

Phiomorpha: Bathyergidae (Blesmols); Petromuridae (Dassie rat); Thryonomyidae (Cane rats)

Caviomorpha (New World hystricognaths): Erethizontidae (New World porcupines); Caviidae (Cavies); Cuniculidae (Pacas); Dasyproctidae (Agoutis and acouchis); Dinomyidae (Pacarana); Ctenomyidae (Tuco-tucos); Echimyidae (Spiny rats, coypus, hutias); Octodontidae (Degus and relatives); Abrocomidae (Chinchilla rats); Chinchillidae (Chinchillas and viscachas)

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