Microcnemus

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Microcnemus
Temporal range: Early Triassic, 251–247 Ma
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Protorosauria
Family: Protorosauridae
Genus: Microcnemus
von Huene, 1940
Type species
Microcnemus efremovi
von Huene, 1940

Microcnemus is an extinct genus of lizard-like early archosauromorph reptiles from the Protorosauridae.[1][2][3][4] Members of the genus lived during the Early Triassic period in Russia (Benthosuchus assemblage zone). Once believed to have been an ancestor to lizards, Microcnemus is now known to be one of the oldest members of the lineage that would eventually lead to archosaurs such as crocodilians and dinosaurs. The type species, M. efremovi, was named in 1940 by the German palaeontologist Friedrich von Huene.[5]

The holotype, PIN 2252/387, consists of fifteen dorsal vertebrae, seventeen caudal vertebrae, two humeri, radius, ulna, ten femora, eleven tibiae, a fibula, ten unidentifiable bone fragments, a scapula-coracoid, a maxilla and dentary missing anterior end.[5][6]

References

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  5. ^ a b v. Huene. 1940. Eine Reptilfauna aus der ältesten Trias Nordrußlands [A reptilian fauna from the earliest Triassic of northern Russia]. Neues Jahrbuch für Mineralogie, Geologie und Paläontologie, Beilagen-Band, Abteilung B 84:1-23
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