| 词条 | Oldfieldthomasiidae |
| 释义 |
| name = Oldfieldthomasiidae | fossil_range = Late Paleocene-Late Eocene ~{{Fossil range|58.7|33.9}} | regnum = Animalia | phylum = Chordata | classis = Mammalia | ordo = †Notoungulata | subordo = †Typotheria | familia = †Oldfieldthomasiidae | familia_authority = Simpson, 1945 | subdivision_ranks = Genera | subdivision = †Allalmeia †Brachystephanus †Camargomendesia †Colbertia †Dolichostylodon †Itaboraitherium †Kibenikhoria †Maxschlosseria †Oldfieldthomasia †Paginula †Suniodon †Tsamnichoria †Ultrapithecus †Xenostephanus | synonyms =
}}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] EtymologyThe family is named after British zoologist Oldfield Thomas. FossilsFossils of the family Oldfieldthomasiidae have been found in southern South America, in Argentina, Bolivia, Brazil and Chile.[2] References{{Portal|Paleogene|Paleontology|Prehistoric mammals|Prehistory of South America}}1. ^{{cite book |last=McKenna |first=Malcolm C. |last2=Bell |first2=Susan K. |year=1997 |title=Classification of Mammals Above the Species Level |publisher=Columbia University Press, New York |pages=1–631 |isbn=0-231-11013-8}} {{Taxonbar|from=Q1223931}}{{paleo-mammal-stub}}2. ^1 Oldfieldthomasiidae at Fossilworks.org 6 : Notoungulates|Prehistoric mammal families|Paleogene mammals of South America|Paleocene first appearances|Eocene extinctions|Taxa named by George Gaylord Simpson |
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