Calciavis
| Calciavis Temporal range: Eocene | |
|---|---|
| Scientific classification | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Aves |
| Infraclass: | Palaeognathae |
| Order: | †Lithornithiformes |
| Family: | †Lithornithidae |
| Genus: | †Calciavis Nesbitt et al. 2016 |
| Species | |
Calciavis is an extinct genus of bird from the Eocene of Wyoming. It is a lithornithid, a member of a lineage of flying palaeognaths, distantly related to modern ratites. Like many other fossils from the Green River Formation, its are exceptionally well preserved, bearing impressions of skin and feathers. Some researchers consider this taxon as a species of Lithornis (L. grandei).