Paraphysornis

Paraphysornis is an extinct genus of giant flightless terror birds that inhabited Brazil during Late Oligocene or Early Miocene epochs.[1]

Paraphysornis
Reconstructed skeleton
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Cariamiformes
Family: Phorusrhacidae
Subfamily: Brontornithinae
Genus: Paraphysornis
Alvarenga, 1993
Type species
Paraphysornis brasiliensis
Alvarenga, 1982
Synonyms
  • Physornis brasiliensis Alvarenga, 1982

Description

Life reconstruction

Paraphysornis was 2.4 m (7 ft 10 in) tall and weighed approximately 180 kilograms (400 lb). It was calculated at having been around 1.4 m (4 ft 7 in) high at the back.[2] Like Brontornis, Paraphysornis is more massively built than other phorusrhacids and has a shorter and stouter tarsometatarsus, which indicates less cursorial and possibly carrion-feeding habits.[3]

Discovery

The nearly complete (%75) skeleton of one specimen (DGM-1418-R) recovered from the Tremembé Formation of the Taubaté Basin. The specimen only lacks most of the upper maxilla, braincase, pelvis and sternum.[2] In the Museum of Natural History of Taubaté is exposed the almost complete skeleton of Paraphysornis found in 1982 by Herculano Alvarenga.

References

  1. "Paraphysornis brasiliensis". Fossilworks. Retrieved 17 December 2021.
  2. Alvarenga, Herculano M. F. & Höfling, Elizabeth (2003). "Systematic revision of the Phorusrhacidae (Aves: Ralliformes)". Papéis Avulsos de Zoologia. 43 (4): 55–91. doi:10.1590/S0031-10492003000400001.CS1 maint: multiple names: authors list (link)
  3. Mayr, Gerald (2016). Avian Evolution: The Fossil Record of Birds and its Paleobiological Significance (1 ed.). Wiley-Blackwell. p. 192. ISBN 978-1119020769. Retrieved 2 April 2020.

Further reading

  • Alvarenga, H.M.F. (1982) Uma gigantesca ave fóssil do cenozóico brasileiro: Physornis brasiliensis sp. n. Anais da Academia Brasileira de Ciências 54(4):697-712


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