Paraphysornis

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

Paraphysornis
Temporal range: Late Oligocene-Early Miocene (Deseadan)
~23 Ma
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 2 April 2020.
  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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