Lamarqueavis
Extinct genus of dinosaurs
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Lamarqueavis is an extinct genus of ornithuran dinosaurs from the family Cimolopterygidae known from Late Cretaceous-aged rocks from Argentina, Canada, and the United States. The type species, L. australis, was named in 2010 and is based on the holotype MML 207, a partial right coracoid found in the Allen Formation, Argentina.[1] Two other species, L. minima, based on the holotype UCMP 53976, a right coracoid found in the Lance Formation, Wyoming,[2] and L. petra, based on the holotype AMNH 21911, a left coracoid also found in the Lance Formation, Wyoming,[3] were transferred over from Cimolopteryx to Lamarqueavis in 2010.[1] A third unnamed species is known from the Dinosaur Park Formation of Alberta, Canada.[3]
| Lamarqueavis Temporal range: Late Cretaceous, | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Clade: | Dinosauria |
| Clade: | Saurischia |
| Clade: | Theropoda |
| Clade: | Avialae |
| Family: | †Cimolopterygidae |
| Genus: | †Lamarqueavis Agnolin, 2010 |
| Type species | |
| †Lamarqueavis australis Agnolin, 2010 | |
| Other species | |
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| Synonyms | |
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Lamarqueavis autralis and Lamarqueavis sp. were placed in Cimolopterygidae based on the family's traits; a humeral articular facet that's ventrally oriented, a sternally extended procoracoid process that developed into a thin lamina, and a large ventrally positioned supracoracoid nerve foramen.[4] Despite these family traits, they were found to be unique to Lamarqueavis, while not present in Cimolopteryx.[4]
