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Temporal range: 164–93 Ma
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Clade: Synapsida
Class: Mammalia
Family: Amphilestidae
Osborn, 1888

The Amphilestidae are a family of Mesozoic mammals, generally regarded as eutriconodonts. They may form a paraphyletic or polyphyletic assemblage, though they share with gobiconodontids their similar tooth occlusion patterns and may be especially closely related to them.[1] They occur from the Late Jurassic to Cenomanian,[2] and have a distribution across both Laurasian landmasses and Gondwanan, with the Tanzanian Tendagurodon from the Tendaguru Formation and the Argentinian Condorodon being among the earliest representatives of this group.[3]



  1. ^ Percy M. Butler; Denise Sigogneau-Russell (2016). "Diversity of triconodonts in the Middle Jurassic of Great Britain" (PDF). Palaeontologia Polonica 67: 35–65. doi:10.4202/pp.2016.67_035.
  2. ^ Jerry J. Hooker and Allan G. Lawson, A ‘eutriconodontan’ mammal from the UK Cenomanian (Late Cretaceous), Publication: Special Papers in Palaeontology Number: 86 Publication Date: 2011 Page(s): 255 – 261
  3. ^ W. -D. Heinrich. 1998. Late Jurassic mammals from Tendaguru, Tanzania. Journal of Mammalian Evolution 5(4):269-290