Samiksha Jaiswal (Editor)

Parectypodus

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Kingdom
  
Animalia

Class
  
Mammalia

Superfamily
  
Ptilodontoidea

Rank
  
Genus

Phylum
  
Chordata

Order
  
Multituberculata

Family
  
Neoplagiaulacidae

Similar
  
Neoplagiaulacidae, Mesodma, Catopsalis, Cimexomys, Ptilodontoidea

Parectypodus ("besides Ectypodus") is a genus of extinct mammal that lived from the Paleocene to the Eocene of North America. Some of the known fossil material may also be from the Upper Cretaceous. It was named by G.L. Jepsen in 1930.

It was a member of the extinct order of Multituberculata, and lies within the suborder of Cimolodonta, family Neoplagiaulacidae.

Species

  • Parectypodus armstrongi (Johnston PA & Fox RC 1984)
  • Place: Puercan (Paleocene) of Rav W-1, Saskatchewan, Canada. This specimen resides in the collection of the University of Alberta.
  • Parectypodus foxi (Storer J.E. 1991). This Maastrichtian (Upper Cretaceous)-age species is estimated to have weighed about 80 g.
  • Parectypodus laytoni (Jepsen G.L., 1940; Sloan R.E., 1966), also known as Ectypodus laytoni (Jepsen 1940). Remains are known from the Lower Tiffanian (Middle-Upper Paleocene) Princeton Quarry of Wyoming (United States). This species has been cited as a descendant of P. sinclairi. It is a small species, having a weight of perhaps 10 g.
  • Parectypodus lunatus (Krause DW, 1982), also known as P. childei (Kühn, 1969).
  • Place: Wasatchian (Lower Eocene) Pocket Quarry of Colorado and Wyoming. This is a late species, having a weight of about 35 g.
  • Parectypodus simpsoni Jepsen, 1930. Eocene.
  • Parectypodus sinclairi (Lamb 1902; Clemens 1964a)
  • Place: Puercan-Torrejonian (Paleocene) Gidley Quarry of Montana, Wyoming and Alberta, Canada. This species has been cited as having derived from Mesodma formosa. It is a smaller species of about 15 g.
  • Parectypodus sloani (Schiebout J.A. 1974)
  • Fossils of this species have been found in the Torrejonian (Paleocene)-age beds of Big Bend, Texas
  • Parectypodus sylviae (Rigby J.K. 1980; Sloan 1987) (=Ectypodus aphronorus (Sloan 1987), P. pattersoni (Sloan 1987)). Remains are known from the Torrejonian (Paleocene)-age Swain Quarry of Montana and Wyoming. The body weight of this species has been estimated as 15 g.
  • Parectypodus trovessartianus (Cope E.D. 1882; Van Valen & Sloan 1966)
  • Place: Puercan-Torrejonian (Paleocene) San Juan Basin of New Mexico. The body mass of this species has been estimated to have been around 90 g.
  • Parectypodus vanvaleni Sloan, 1981.
  • Place: Puercan (Paleocene) San Juan Basin of New Mexico.

    • References

    Parectypodus Wikipedia
    (Text) CC BY-SA


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