Gastornis

Gastornis
Temporal range: Paleocene – mid Eocene, Selandian–Lutetian
Mounted skeleton of G. gigantea
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Gastornithiformes
Family: Gastornithidae
Fürbringer, 1888
Genus: Gastornis
Hébert, 1855 (vide Prévost, 1855)
Type species
Gastornis parisiensis
Hébert, 1855
Other species
  • G. gigantea (Cope, 1876)
  • G. sarasini Schaub, 1929
  • G. geiselensis Fischer, 1978
  • G. russeli Martin, 1992
  • G. xichuanensis (Hou, 1980)
  • G. laurenti Mourer-Chauviré & Bourdon, 2020[1]
Synonyms
  • Diatryma Cope, 1876
  • Barornis Marsh, 1894
  • Omorhamphus Sinclair, 1928
  • Zhongyuanus Hou, 1980

Gastornis is an extinct genus of large, flightless birds that lived during the mid-Paleocene to mid-Eocene epochs of the Paleogene period. Fossils have been found in Europe, Asia and North America, with the North American specimens formerly assigned to the genus Diatryma.

Gastornis species were very large birds that were traditionally thought to have been predators of various smaller mammals, such as ancient, diminutive equids. However, several lines of evidence, including the lack of hooked claws (in known Gastornis footprints), studies of their beak structure and isotopic signatures of their bones, have caused scientists to now consider that these birds as probably herbivorous, feeding on tough plant material and seeds. Gastornis is, generally, agreed to be related to the Galloanserae, the group containing waterfowl and gamebirds.

  1. ^ Cécile Mourer-Chauviré; Estelle Bourdon (2020). "Description of a new species of Gastornis (Aves, Gastornithiformes) from the early Eocene of La Borie, southwestern France" (PDF). Geobios. 63: 39–46. Bibcode:2020Geobi..63...39M. doi:10.1016/j.geobios.2020.10.002. S2CID 228975095.