Where: Rio Grande do Sul, Brazil (29.7° S, 52.8° W: paleocoordinates 37.0° S, 15.1° W)
• coordinate estimated from map
• small collection-level geographic resolution
When: Ictidosauria other zone, Caturrita Formation (Rosário do Sul Group), Norian (228.0 - 208.5 Ma)
• Locality is from the upper part of the highstand system tract of the Santa Maria Sequence 2, Santa Maria Supersequence of the Rosario do Sul Group, representing the Caturrita Formation of Norian age (see Langer et al. 2007). Ictidosauria or Mammaliamorpha Assemblage Zone (= Jachaleria Interval)
• bed-level stratigraphic resolution
Environment/lithology: fluvial; massive, concretionary sandstone
Size class: macrofossils
Collected in 2000
• UFRGS: Universidade Federal do Rio Grande do Sul (Porto Alegre)
Primary reference: A. G. Martinelli, J. F. Bonaparte, C. L. Schultz and R. Rubert. 2005. A new tritheledontid (Therapsida, Eucynodontia) from the Late Triassic of Rio Grande do Sul (Brazil) and its phylogenetic relationships among carnivorous non-mammalian eucynodonts. Ameghiniana 42(1):191-208 [R. Butler/R. Butler]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 105530: authorized by Richard Butler, entered by Richard Butler on 22.02.2011
Creative Commons license: CC BY (attribution)
Taxonomic list
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| Osteichthyes | |
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Riograndia guaibensis n. gen. n. sp.1 Bonaparte et al. 2001 mammaliamorph MCN-PV 2264 (holotype), anterior portion of skull. MCN-PV 2265, MCN-PV 2271, lower jaws. UFRGS-PV-0569-T, UFRGS-PV-0601-T, skulls
Irajatherium hernandezi n. gen. n. sp. Martinelli et al. 2005 mammaliamorph UFRGS-PV 0599T, fragmentary partial skeleton (holotype). UFRGS PV-1167-T, UFRGS PV-1175-T, maxillae
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