Palaeosinopa

Extinct genus of mammals From Wikipedia, the free encyclopedia

Palaeosinopa ("ancient Sinopa") is an extinct genus of semi-aquatic mammals belonging to the subfamily Pantolestinae within family Pantolestidae. Species in this genus lived from the late Paleocene to early Eocene in North America and Europe. Their diet consisted of other aquatic life forms.

Phylum:Chordata
Class:Mammalia
Infraclass:Placentalia
Order:Pantolesta
Quick facts Scientific classification, Type species ...
Palaeosinopa
Temporal range: 58.9–50.0 Ma late Paleocene to early Eocene
reconstruction of Palaeosinopa didelphoides
fossil of Palaeosinopa didelphoides with fossils of fish species Knightia alta from Wyoming
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Infraclass: Placentalia
Order: Pantolesta
Family: Pantolestidae
Subfamily: Pantolestinae
Genus: Palaeosinopa
Matthew, 1901[1]
Type species
Palaeosinopa didelphoides
Cope, 1881
Species
  • P. aestuarium (Beard & Dawson, 2009)[2]
  • P. didelphoides (Cope, 1881)[3]
  • P. dorri (Gingerich, 1980)[4]
  • P. incerta (Bown & Schankler, 1982)[5]
  • P. lacus (Gunnell, 2016)[6]
  • P. lutreola (Matthew, 1918)[7]
  • P. nunavutensis (Eberle & McKenna, 2002)[8]
  • P. osborni (Lemoine, 1891)[9]
  • P. reclusum (Rankin, 2014)[10]
  • P. russelli (Smith, 1997)[11]
Synonyms[12]
synonyms of species:
  • P. didelphoides:
    • Ictops didelphoides (Cope, 1881)
    • Palaeosinopa veterrima (Matthew, 1901)
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Description

Palaeosinopa was a medium-sized, semi-aquatic mammal structurally convergent with modern otters. Based on an exceptionally complete, articulated skeleton discovered in the Eocene-aged Green River Formation of Wyoming, P.didelphoides measured approximately 1 meter (3.3 ft) in total length from the snout to the tip of the tail and is estimated to have weighed roughly 5 kilograms (11 lbs).

References

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