Oldfieldthomasiidae is an extinct family of notoungulate mammals known from the Late Paleocene to Late Eocene of South America.[1] The family was classified by George Gaylord Simpson in 1945 and a synonym is Acoelodidae, defined by Florentino Ameghino in 1901.[2]

Oldfieldthomasiidae
Temporal range: Late Paleocene-Late Eocene
~58.7–33.9 Ma
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Notoungulata
Suborder: Typotheria
Family: Oldfieldthomasiidae
Simpson, 1945
Genera

Allalmeia
Brachystephanus
Camargomendesia
Colbertia
Dolichostylodon
Itaboraitherium
Kibenikhoria
Maxschlosseria
Oldfieldthomasia
Paginula
Suniodon
Tsamnichoria
Ultrapithecus
Xenostephanus

Synonyms

Etymology

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The family is named after British zoologist Oldfield Thomas.

Fossils

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Fossils of the family Oldfieldthomasiidae have been found in southern South America, in Argentina, Bolivia, Brazil and Chile.[2]

References

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  1. ^ McKenna, Malcolm C.; Bell, Susan K. (1997). Classification of Mammals Above the Species Level. Columbia University Press, New York. pp. 1–631. ISBN 0-231-11013-8.
  2. ^ a b Oldfieldthomasiidae at Fossilworks.org