Stygimys

Stygimys

Taxobox
name = "Stygimys"
fossil_range = Late Cretaceous - Paleocene
regnum = Animalia
phylum = Chordata
classis = Mammalia
ordo = Multituberculata
familia = Eucosmodontidae
genus = "Stygimys"
subdivision_ranks = Species
subdivision =
* "S. camptorhiza"
* "S. cupressus"
* "S. jepseni"
* "S. kuszmauli"
* "S. teilhardi"

"Stygimys" is an extinct mammal genus from the Upper Cretaceous and Paleocene of North America. It was a member of the extinct order Multituberculata within the suborder Cimolodonta, family Eucosmodontidae.

The genus "Stygimys" ("Styx mouse") was named by Sloan R.E. and Van Valen L. in 1965. The name comes from the Styx (river of hell) from Greek mythology. The genus has also been known as "Catopsalis" (partly); "Cimexomys" (partly); "Eucosmodon" (partly); and "Parectypodus" (partly). Some skull material is known, but not much.

pecies

The species "Stygimys camptorhiza" was named by Johnston P.A. and Fox R.C. in 1984.Place: Puercan (Paleocene)-age strata of Rav W-1 in Saskatchewan, Canada. The holotype for this species is in the University of Alberta collection.

The species "Stygimys cupressus" was named by Fox R.C. in 1989. Remains are known from the Puercan (Paleocene)-age strata of the Long Fall Horizon of Canada.

The species "Stygimys jepseni" was named by Simpson G.G. in 1935 and Sloan and Van Valen in 1965. It is also known as "Eucosmodon sparsus" (Simpson 1937a); "E. jepseni"; and "Parectypodus jepseni" (Simpson 1935d). Remains are known from the Torrejonian (Paleocene)-age strata of Montana (USA). This species has been cited as a descendant of "S. kuszmauli". The animal weighed about 90 g.

The species "Stygimys kuszmauli" was named by Sloan R.E. and Van Valen L. in 1965. It has also been known as "Catopsalis foliates" (Cope 1882); "Cimexomys gratus" (Jepsen GL, 1930); "Eucosmodon gratus" (Jepson G.L. 1930); "Eucosmodon kuszmauli "; and "Stygimys gratus". Remains were found in Maastrichtian (Upper Cretaceous) - Puercan (Paleocene)-age strata of the Polecat Bench Formation of Wyoming and the Hell Creek Formation of Montana. Some scraps of jaw are known. This species is the most basal member of the genus, with a weight of 300 g.

The species "Stygimys teilhardi" was named by Granger W. & Simpson G.G. in 1929 and Sloan R.E. and Van Valen in 1965. It has also been known as "Eucosmodon teilhardi" (Granger W. & Simpson G.G. 1929). Remains are known from the Torrejonian (Paleocene)-age strata of the San Juan Basin of New Mexico. This species has been cited as a possible descendant of "S. kuszmauli".

References

* Johnston & Fox (1984), "Paleocene and Late Cretaceous mammals from Saskatchewan, Canada". Palaeontogr. Abt. A: Paläozool., Stratigr. 186, p.163-222.
* Sloan & Van Valen (1965), "Cretaceous mammals from Montana". "Science" 148(3367), p.220-227.
* Jepson (1930), "Stratigraphy and paleontology of the Paleocene of northeastern Park County, Wyoming". "Proc. Am. Phil. Soc." 69(7), p.463-528.
* Kielan-Jaworowska Z & Hurum JH (2001), "Phylogeny and Systematics of multituberculate mammals". "Paleontology" 44, p.389-429.
* Fox (1989), "The Wounded Knee local fauna and mammalian evolution near the Cretaceous-Tertiary boundary, Saskatchewan, Canada". Palaeontogr. Abt. A: Paläozool., Stratigr. 208, p.11-59 + 6 plates.
* Much of this information has been derived from [http://home.arcor.de/ktdykes/taenio.htm] MESOZOIC MAMMALS: Eucosmodontidae, Microcosmodontidae and Taeniolabidoidea, an Internet directory.


Wikimedia Foundation. 2010.

Игры ⚽ Поможем сделать НИР

Look at other dictionaries:

  • Cimolodonta — Temporal range: Cretaceous Eocene A reconstruction of Ptilodus Scientific classification Kingdom …   Wikipedia

  • Cimexomys — Temporal range: Late Cretaceous Paleocene Cimexomys minor fossil Scientific classification Kingdom …   Wikipedia

  • Список родов мезозойских млекопитающих — Список родов мезозойских (триас, юра, мел) млекопитающих и протомлекопитающих Acinacodus (Акинакод) ранний мел, Россия (Кемеровская обл.) Acristatherium (Акристатерий) ранний мел, Китай Adelobasileus (Аделобазилевс) поздний триас, США (Техас)… …   Википедия

  • Parectypodus — Taxobox name = Parectypodus status = Fossil regnum = Animalia phylum = Chordata classis = Mammalia ordo = Multituberculata superfamilia = Ptilodontoidea familia = Neoplagiaulacidae genus = Parectypodus subdivision ranks = Species subdivision = *… …   Wikipedia

  • Eucosmodontidae — Taxobox name = Eucosmodontidae fossil range = Late Cretaceous early Eocene regnum = Animalia phylum = Chordata classis = Mammalia ordo = Multituberculata familia = Eucosmodontidae subdivision ranks = Genera subdivision = * Clemensodon *… …   Wikipedia

  • List of prehistoric mammals — This is a list of articles dealing with animals that lived and went extinct during prehistoric times. It does not include species that existed then that still continue to exist into recorded history.ubclass PrototheriaInfraclass Yinotheria*Family …   Wikipedia

  • Multituberculata — Schädel von Ptilodus Zeitraum Jura bis Eozän 165 bis 34 Mio. Jahre Fundorte Eurasien, Nordamerika …   Deutsch Wikipedia

  • Anexo:Mamíferos prehistóricos — La siguiente es una lista incompleta de mamíferos prehistóricos. No incluye los mámiferos existentes, ni los mamíferos extintos recientemente. Para las especies de primate extintas ver: lista de primates fósiles. Contenido 1 Mamaliformes 1.1… …   Wikipedia Español

  • Taeniolabidoidea —   Taeniolabidoidea Rango fósil: Cretácico Superior Paleoceno C …   Wikipedia Español

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”