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]
^ abMorgan 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)
^Cite error: The named reference Bonaparte2001 was invoked but never defined (see the help page).
^Cite error: The named reference Soares2011 was invoked but never defined (see the help page).
^Cite error: The named reference Schultz2020 was invoked but never defined (see the help page).
Riograndia is an extinct genus of prozostrodontian cynodonts from the Late Triassic of Brazil. The type and only species is Riograndia guaibensis, named...
with Faxinalipterus minima, a putative pterosaur. The therapsids include Riograndia guaibensis, Brasilodon quadrangularis, and Irajatherium hernandezi . Leal...
which corresponds to a biostratigraphic unit known as the Riograndia Assemblage Zone. The Riograndia AZ has been dated to the early Norian age of the Late...
A study on nasal cavities of Thrinaxodon, Chiniquodon, Prozostrodon, Riograndia and Brasilodon is published by Fonseca et al. (2024), who find no evidence...
Candelária Formation (Late Triassic, Carnian to Norian) Brazil Known from the Riograndia Assemblage Zone, an area which is unusually dominated by cynodonts Futalognkosaurus...
rich in Triassic fossils, is located in the state of Rio Grande do Sul. Riograndia, a cynodont from these deposits, was named after the state in 2001. Other...
an extinct genus of prozostrodontian cynodonts from the early Norian Riograndia Assemblage Zone in the Candelária Formation of the Paraná Basin in southeastern...
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