| 词条 | Cyrtlatherium |
| 释义 |
| name = Cyrtlatherium | fossil_range = Middle Jurassic, {{fossil range|174.1|163.5}} | regnum = Animalia | phylum = Chordata | ordo = Therapsida | subordo = †Docodonta | familia = †Docodontidae | subfamilia = | genus = †Cyrtlatherium | genus_authority = Freeman, 1979 | binomial = {{extinct}}Cyrtlatherium canei | binomial_authority = Freeman, 1979 }} Cyrtlatherium is a genus of extinct docodontan mammaliaform from the Middle Jurassic rocks of Oxfordshire, England. As it is only known from a few isolated molar teeth, there is disagreement about whether Cyrtlatherium is a separate genus of mammal, or whether it is a synonym and the molar teeth are the milk teeth of another genus of docodont. Cyrtlatherium was named from a few single molar teeth in the Kirtlington mammal beds in England, and was originally thought to be a kuehneotheriid mammal,[1] but was later reclassified as belonging to a docodont mammal.[2] When reclassifying it, Sigogneau-Russell argued that it was the milk tooth of a previously named docodont called Simpsonodon. This is now generally accepted to be the case by most mammal palaeontologists. References1. ^Freeman EF. 1979. A Middle Jurassic mammal bed from Oxfordshire. Palaeontology 22:135-166 {{paleo-mammal-stub}}2. ^Sigogneau-Russell D. 2001 Docodont nature of Cyrtlatherium, an upper Bathonian mammal from England. Acta Palaeontologica Polonica, 46:429-430 4 : Docodonts|Jurassic mammals of Europe|Mammaliaformes|Fossil taxa described in 1979 |
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