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Cachoeira do Sul (Triassic to of Brazil)

Where: Rio Grande do Sul, Brazil (30.0° S, 52.9° W: paleocoordinates 49.8° S, 21.9° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Lystrosaurus other zone, Sanga do Cabral Formation (Rosario do Sul Group), Induan to Induan (252.3 - 247.2 Ma)

• The Sanga do Cabral Fm. is correlated with the "impoverished zone" (Procolophon subzone) of the Lystrosaurus Assemblage Zone of the Main Karoo Basin of South Africa by some authors on the basis of the abundant records of Procolophon, i.e., it is Upper Induan to Lower Olenekian in age (see Dias-da-Silva et al., 2006, Can. J. Earth Sci. and references therein). However, Langer et al. (2007; New Mexico Mus. Nat. Hist. Sci. Bull. 41) pointed out that the prevalence of Procolophon in the Brazilian sequence might represent a taphonomic bias, and that only an undifferentiated Lower Triassic age is currently possible.

• group of beds-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Collection methods: U, Universidade Vale do Rio dos Sinos, Rio Grande do Sul (Brazil)

Primary reference: S. Dias-da-Silva, C. Marsicano, and C. L. Schultz. 2006. Rhytidosteid temnospondyls in Gondwana: a new taxon from the Lower Triassic of Brazil. Palaeontology 49:381-390 [R. Butler/R. Butler] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 99231: authorized by Richard Butler, entered by Richard Butler on 03.11.2010

Creative Commons license: CC BY (attribution)