Also known as Paraná Basin

Where: São Paulo, Brazil (23.0° S, 47.9° W: paleocoordinates 44.5° S, 25.0° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Assistencia Member (Irati Formation), Artinskian (290.1 - 279.3 Ma)

• Stratigraphic data are neither given on the label associated with the specimens nor in the hand-written note containing the geographic description. It is, however, very likely that the fossils come from the Irati Formation of the Passa Dois Group. The lithology suggests that they probably come from the Assistência Member of the Irati Fm. (see Santos et al., 2009, J. S. Am. Earth Sci., Article in Press, doi:10.1016/j.jsames.2008.12.002).

•In a quite 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).

• member-level stratigraphic resolution

Environment/lithology: white, yellow lime mudstone and lenticular chert

Size class: macrofossils

Collected by R. Krone; reposited in the MfN

• The specimens appear to have been collected in the late 19th or early 20th century.

Primary reference: T. Liebrecht and J. Müller. 2009. Mesosaurid specimens in the collections of the Museum für Naturkunde Berlin. [J. Mueller/T. Liebrecht/T. Liebrecht]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 90192: authorized by Johannes Mueller, entered by Torsten Liebrecht on 13.07.2009

Creative Commons license: CC BY (attribution)