Also known as Paraná Basin
Where: Goiás, Brazil (17.5° S, 52.1° W: paleocoordinates 37.9° S, 27.1° W)
• coordinate estimated from map
• outcrop-level geographic resolution
When: Assistencia Member (Irati Formation), Artinskian (290.1 - 279.3 Ma)
• The authors give a Sakmarian age of the Irati Formation referring to Pinto (1972) and Oelofsen & Araújo (1987). However, in a fairly recent publication it is stated that the Irati Formation is Artinskian in age, based on absolute ages obtained from zircons from a bentonite layer (Santos et al., 2006, Gondwana Res. 9).
•The presence of limestones (see lithological description) indicates that the locality is within the Assistência Member of the Irati Formation (see Santos et al., 2009, J. S. Am. Earth Sci., Article in Press, doi:10.1016/j.jsames.2008.12.002).
• group of beds-level stratigraphic resolution
Environment/lithology: dolomitic, white, yellow lime mudstone and lenticular chert
•The statement that only the lower horizon yielded articulated skeletons implies that the specimens listed by Sedor & Ferigolo are exclusively from these beds.
Size class: macrofossils
Preservation: mold/impression
Collection methods: mechanical,
• MCN.P = Museu de Ciências Naturais, do Setor de Ciências Biológicas da Universidade Federal do Paraná [Museum of Natural Sciences, Section of Biological Sciences of the Federal University of Paraná]
•UNB = Departamento de Geociências da Universidade de Brasília [Department of Geosciences of the University of Brasilia]
Primary reference: F. A. Sedor and J. Ferigolo. 2001. A coluna vertebral de Brazilosaurus sanpauloensis Shikama e Ozaki, 1966 da Formação Irati, Permiano da Bacia do Paraná (Brasil) (Proganosauria, Mesosauridae). Acta Biológica Paranaense, Curitiba 30(1-4):151-173 [J. Mueller/T. Liebrecht/T. Liebrecht]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 89839: authorized by Johannes Mueller, entered by Torsten Liebrecht on 15.06.2009, edited by Mark Uhen
Creative Commons license: CC BY (attribution)
Taxonomic list
Osteichthyes | |
Brazilosaurus sanpauloensis Shikama and Ozaki 1966 amniote MCN.P.557, 558, 562, 563, 566, 568; UNB unnumbered (suite of 1 large and 3 juvenile individuals)
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