Lagerpetidae
| Lagerpetidae |
|
|---|---|
 |
|
| Dromomeron gregorii | |
Scientific classification  |
|
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Clade: | Dinosauromorpha |
| Family: | †Lagerpetidae Arcucci, 1986 |
| Genera | |
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The Lagerpetidae (LAJ•er•pet•ih•DÆ, originally Lagerpetonidae) is a family of basal dinosauromorphs. Members of the family are known from Middle to Late Triassic (Ladinian to Norian) of Argentina, Arizona, New Mexico, and Texas.[1]
Description
Lagerpetids are defined as being rather small (length of one hind limb being 25 centimetres (9.8 in)), with "very marked locomotor specializations", final presacral and anteriorly oriented vertebrae, a sacral including two vertebrae, a closed acetabulum, and an up facing ilium".[2] They had a short and wide pubis, and had an ischium with extensive ventral lamina.[2] In relation to the genus Lagosuchus, the genera had shorter thigh bones than shins.[2]
Classification and systematics
The lagerpetids were relatives of the dinosaurs, being a branch of the group Dinosauromorpha. The clade was named in a phylogenetic study by S. J. Nesbitt and colleagues in 2009.[1]
References
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