PMID: 11607634Feb 20, 1996Paper

On the origin of the order Artiodactyla

Proceedings of the National Academy of Sciences of the United States of America
Kenneth D Rose

Abstract

The first known members of the order Artiodactyla appeared suddenly throughout the Holarctic region at the beginning of the Eocene. They are characterized by distinctive cursorial skeletal specializations. Owing to their abrupt appearance and the lack of transitional forms, the origin of the order is problematic. Descent from a "condylarth," specifically the arctocyonid Chriacus, has been suggested based on dental resemblances, but until now postcranial anatomy seemed to preclude close relationship between Arctocyonidae and Artiodactyla. A middle Paleocene specimen of a small arctocyonid (?Chriacus) reported here is much more similar to the oldest artiodactyl, Diacodexis, in the derived condition of the hindlimb, reviving the possibility that Artiodactyla evolved from an arctocyonid.

Citations

Apr 10, 2013·BMC Evolutionary Biology·Thomas J D Halliday, Anjali Goswami
Jul 6, 2014·Nature·Kimberly L CooperClifford J Tabin
Jan 12, 2017·Biological Reviews of the Cambridge Philosophical Society·Thomas J D HallidayAnjali Goswami
Apr 8, 2009·Chromosome Research : an International Journal on the Molecular, Supramolecular and Evolutionary Aspects of Chromosome Biology·Anastasia I KulemzinaAlexander S Graphodatsky
Aug 13, 2005·Biological Reviews of the Cambridge Philosophical Society·Samantha A PriceJohn L Gittleman
Apr 4, 2015·Proceedings. Biological Sciences·Michael Buckley

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