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Riojasuchus tenuisceps

Description
Not to be confused with the sauropodomorph dinosaur, Riojasaurus

Riojasuchus is an extinct genus of Late Triassic (Norian) quadrupedal crurotarsan archosaur. Riojasuchus is a member of Ornithosuchidae, a family of facultatively bipedal carnivores that were geographically widespread during the Late Triassic. Two other genera, Ornithosuchus and Venaticosuchus, are currently known. The holotype specimen is PVL 3827. It was found in the Los Colorados Formation of the Ischigualasto-Villa Unión Basin in northwestern Argentina.


Source Data
SourceIDLink
Global Biodiversity Information Facility ID (GBIF)4965505https://www.gbif.org/species/4965505
PaleoBioDB ID (PBDB)66677https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=66677
Rankspecies
Taxonomy (GBIF)Life : Animalia : Chordata : Reptilia : Ornithosuchidae : Riojasuchus : Riojasuchus tenuisceps
Taxonomy (PBDB)Life : Animalia : Chordata : Reptilia : Eosuchia : Ornithosuchidae : Riojasuchus : Riojasuchus tenuisceps
Taxonomic Status (GBIF)accepted
Classification
(PBDB,GBIF)
RankNameAuthor
-Eukaryota
-OpisthokontaCavalier-Smith 1987
kingdomAnimalia
-TriploblasticaLankester 1877
-NephrozoaJondelius et al. 2002
-DeuterostomiaGrobben 1908
phylumChordataHaeckel 1847
subphylumVertebrataLamarck 1801
superclassGnathostomataGegenbauer 1874
-Osteichthyes
-SarcopterygiiRomer 1955
subclassDipnotetrapodomorpha
subclassTetrapodomorpha
-Tetrapoda
-ReptiliomorphaSäve-Söderbergh 1934
-AnthracosauriaSäve-Söderbergh 1934
-Batrachosauria
-Cotylosauria
-AmniotaHaeckel 1866
-SauropsidaHuxley 1864
classReptiliaLaurenti 1768
subclassEureptilia
-RomeriidaGauthier et al. 1988
-Diapsida
-Eosuchia
-NeodiapsidaBenton 1985
-SauriaGauthier 1984
-Archosauromorpha
-CrocopodaEzcurra 2016
-ArchosauriformesGauthier 1986
-EucrocopodaEzcurra 2016
-Archosauria
-Pseudosuchia
-Ornithosuchidae
genusRiojasuchusBonaparte 1969
speciesRiojasuchus tenuiscepsBonaparte 1969
Generic NameRiojasuchus
Scientific NameRiojasuchus tenuisceps Bonaparte, 1969
Opinions (PBDB)
NameRankOpinionEvidenceAuthor
Riojasuchus tenuiscepsspeciesbelongs to Riojasuchusstated without evidenceBonaparte, 1969
Riojasuchus tenuiscepsspeciesbelongs to Riojasuchusstated with evidenceNesbitt, 2011
Status (PBDB)extinct
Taxon Size (PBDB)1
First Recorded Appearance228 - 209 Ma
Late/Upper Triassic
Last Recorded Appearance228 - 209 Ma
Late/Upper Triassic
Environmentterrestrial (based on Diapsida)
Motilityactively mobile (based on Osteichthyes)
Dietcarnivore (based on Pseudosuchia)
Taphonomyphosphatic (based on Vertebrata)
Primary Reference (PBDB)J. F. Bonaparte. 1969. Dos nuevas "faunas" de reptiles triasicos de Argentina [Two new reptilian "faunas" of the Argentine Triassic]. Gondwana Stratigraphy (IUGS Symposium, Buenos Aires) 2:283-306
Wikipediahttps://en.wikipedia.org/wiki/Riojasuchus_tenuisceps

Fossil Distribution

Synonymy List

YearName and Author
1969Riojasuchus tenuisceps Bonaparte pp. 296-297 figs. 10-11
2011Riojasuchus tenuisceps Nesbitt p. 22
2013Riojasuchus tenuisceps Von Baczko and Ezcurra

References

Bonaparte J. F. (1969) Dos nuevas "faunas" de reptiles triasicos de Argentina [Two new reptilian "faunas" of the Argentine Triassic], Gondwana Stratigraphy (IUGS Symposium, Buenos Aires) 2, 283-306
Nesbitt S. J. (2011) The early evolution of archosaurs: relationships and the origin of major clades, Bulletin of the American Museum of Natural History 353, 1-292
Von Baczko M. B., Ezcurra M. D. (2013) Ornithosuchidae: a group of Triassic archosaurs with a unique ankle joint, Anatomy, Phylogeny and Palaeobiology of Early Archosaurs and their Kin. Geological Society, London, Special Publications 379 doi:10.1144/SP379.4
Data courtesy of: PBDB: The Paleobiology Database, Creative Commons CC-BY licenced. , GBIF: the Global Biodiversity Information Facility, various licences, iDigBio, various licences, and EOL: The Encyclopedia of Life (Open Data Public Domain). Because fossils are made of minerals too!
 
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