Riograndia

Riograndia
Temporal range: Norian
~225.42 Ma
↓
Life restoration of Riograndia guaibensis
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Clade: Synapsida
Clade: Therapsida
Clade: Cynodontia
Family: †Tritheledontidae
Genus: †Riograndia
Bonaparte et al., 2001
Species:
†R. guaibensis
Binomial name
†Riograndia guaibensis
Bonaparte et al., 2001

Riograndia is an extinct genus of prozostrodontian cynodonts from the Late Triassic of Brazil.[1] The type and only species is Riograndia guaibensis, named after the State of Rio Grande do Sul and Guaíba Basin, where it was discovered.[2] Remains have been found in the Caturrita Formation of the geopark of Paleorrota. It was a small non-mammalian cynodont, with several advanced features also present in mammals. Several specimens of Riograndia guaibensis have been found in the towns of Candelária and Faxinal do Soturno in the Caturrita Formation.[3] The genus defines the Riograndia Assemblage Zone.[1][4]

  1. ^ a b Morgan Lionel Guignard, Agustin G. Martinelli, Marina B Soares (2019). "Postcranial anatomy of Riograndia guaibensis (Cynodontia: Ictidosauria)". Geobios. 53: 9-21. doi:10.1016/j.geobios.2019.02.006.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  2. ^ Cite error: The named reference Bonaparte2001 was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference Soares2011 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference Schultz2020 was invoked but never defined (see the help page).