Stylinodontidae ("teeth with pilar-like fibers") is an extinct family of mammals from extinct superfamily Stylinodontoidea[4] within extinct order Taeniodonta, that lived in North America from the early Paleocene to middle Eocene.

[5][6][7] Atlantogenata Boreoeutheria †Palaeoryctida †Ambilestes †Procerberidae †Alveugena †Schowalteria †Conoryctidae †Onychodectidae †Wortmania otariidens †Wortmania sp.

(Garfield County, Montana) †Psittacotherium multifragum †Stylinodon mirus †Ectoganus bighornensis †Ectoganus copei †Ectoganus gliriformis †Ectoganus lobdelli

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