Riojasuchus

Not to be confused with the sauropodomorph dinosaur, Riojasaurus.

Riojasuchus
Temporal range: Norian
~217–215 Ma
↓
Holotype skull and diagram
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Clade: Archosauria
Clade: Pseudosuchia
Family: †Ornithosuchidae
Genus: †Riojasuchus
Bonaparte 1969
Type species
Riojasuchus tenuisceps

Riojasuchus is an extinct genus of ornithosuchid archosaur from the Late Triassic (Norian) of Argentina. Ornithosuchidae was a widespread family of facultatively bipedal pseudosuchians (crocodilian-line archosaurs) with adaptations for scavenging.[1][2] Riojasuchus is notable as one of the youngest and most complete members of the family. The type and only known species, Riojasuchus tenuisceps, was named and described by José Bonaparte in 1967.[3] It was one of the first of many well-preserved Triassic archosaurs to be discovered in Argentina. The holotype specimen, PVL 3827, was found in the Los Colorados Formation of the Ischigualasto-Villa Unión Basin in northwestern Argentina.[4][5]

  1. ^ Cite error: The named reference baczko2013 was invoked but never defined (see the help page).
  2. ^ Von Baczko, M. Belén (2018). "Rediscovered Cranial Material of Venaticosuchus rusconii Enables the First Jaw Biomechanics in Ornithosuchidae (Archosauria: Pseudosuchia)". Ameghiniana. 55 (4): 365–379. doi:10.5710/AMGH.19.03.2018.3170. hdl:11336/99976. S2CID 134536703.
  3. ^ Cite error: The named reference bonaparte1969 was invoked but never defined (see the help page).
  4. ^ Baczko, Maria Belen von; Desojo, Julia Brenda (2016-02-05). "Cranial Anatomy and Palaeoneurology of the Archosaur Riojasuchus tenuisceps from the Los Colorados Formation, La Rioja, Argentina". PLOS ONE. 11 (2): e0148575. Bibcode:2016PLoSO..1148575V. doi:10.1371/journal.pone.0148575. ISSN 1932-6203. PMC 4743959. PMID 26849433.
  5. ^ von Baczko, M. Belén; Desojo, Julia B.; Ponce, Denis (2019-09-03). "Postcranial anatomy and osteoderm histology of Riojasuchus tenuisceps and a phylogenetic update on Ornithosuchidae (Archosauria, Pseudosuchia)". Journal of Vertebrate Paleontology. 39 (5): e1693396. Bibcode:2019JVPal..39E3396V. doi:10.1080/02724634.2019.1693396. hdl:11336/138965. ISSN 0272-4634.