Ilchunaia

Quality 0.50 · 1 view · Updated 2 months ago

Extinct genus of reptiles

title: "Ilchunaia" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["sebecidae", "eocene-crocodylomorphs", "eocene-reptiles-of-south-america", "tinguirirican", "divisaderan", "paleogene-argentina", "fossils-of-argentina", "fossil-taxa-described-in-1946", "prehistoric-pseudosuchian-genera"] description: "Extinct genus of reptiles" topic_path: "geography/argentina" source: "https://en.wikipedia.org/wiki/Ilchunaia" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0

::summary Extinct genus of reptiles ::

| taxon = Ilchunaia | fossil_range = Late Eocene (Divisaderan-Tinguirirican) ~ | authority = Rusconi, 1946 | type_species = Ilchunaia parva | type_species_authority = Rusconi, 1946

Ilchunaia is an extinct genus of sebecid mesoeucrocodylian. Fossils have been found from the Divisadero Largo Formation of Argentina dating back to the Late Eocene, and a locality in Mendoza, Argentina dating back to the Oligocene. Little material is known from the genus, with only the anterior portion of the skull being present to study (the holotype has since been lost).

Taxonomy

The placement of Ilchunaia within Sebecosuchidae has been questioned in the past, and many recent phylogenetic analyses have shown the family to be entirely paraphyletic, with members most likely being basal sebecosuchians ancestral to the baurusuchids.

References

References

  1. [https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=38399 ''Ilchunaia''] at [[Fossilworks]].org
  2. Paolillo, Alfredo; and Linares, Omar J. (2007). Nuevos cocodrilos Sebecosuchia del Cenozoico Suramericano (Mesosuchia: Crocodylia). ''Paleobiologia Neotropical'' '''3''': 1–25.
  3. Turner, A. H. and Calvo, J. O. (2005). A new sebecosuchian crocodyliform from the Late Cretaceous of Patagonia. ''Journal of Vertebrate Paleontology'' '''25'''(1):87–98.
  4. Rusconi, C. (1946). Ave y reptil oligocenos de Mendoza. ''Bolletín Paleontológico (Buenos Aires)'' '''21''':1–3.
  5. Langston, W. J. (1956). The Sebecosuchia: cosmopolitan crocodilians? ''American Journal of Science'' '''254''':605–614.
  6. Gasparini, Z., Fernández, M. and Powell, J. (1993). New Tertiary Sebecosuchians (Crocodylomorpha) from South America: Phylogenetic Implications. ''Hististorical Biology'' '''7''':1-19.
  7. Gasparini, Z. (1972). Los Sebecosuchia (Crocodilia) del territorio argentino. Consideraciones sobre su “status” taxonómico. ''Ameghiniana'' '''9'''(1): 23-34.
  8. Busbey III, A. B. (1986). New material of ''Sebecus cf. huilensis'' (Crocodilia: Sebecosuchia) from the Miocene La Venta Formation of Colombia. ''Journal of Vertebrate Paleontology'' '''6'''(1):20-27.
  9. Gasparini, Z., Fernández, M. and Powell, J. (1993). New Tertiary Sebecosuchians (Crocodylomorpha) from South America: Phylogenetic Implications. ''Hististorical Biology'' '''7''':1-19.
  10. Ortega, F., Buscalioni, A. D. and Gasparini, Z. (1996). Reinterpretation and new denomination of ''Atacisaurus crassiporatus'' (Middle Eocene; Issel, France) as ''cf. Iberosuchus'' (Crocodylomorpha, Metasuchia). ''Geobios'' '''29''':353–364.
  11. Ortega, F., Gasparini, Z., Buscalioni, A. D., and Calvo, J. O. (2000). A new species of ''Araripesuchus'' (Crocodylomorpha, Mesoeucrocodylia) from the Lower Cretaceous of Patagonia (Argentina). ''Journal of Vertebrate Paleontology'' '''20''':57–76.

::callout[type=info title="Wikipedia Source"] This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page. ::

sebecidaeeocene-crocodylomorphseocene-reptiles-of-south-americatinguiriricandivisaderanpaleogene-argentinafossils-of-argentinafossil-taxa-described-in-1946prehistoric-pseudosuchian-genera