Where: Sonora, Mexico (29.0° N, 110.8° W: paleocoordinates 9.1° N, 40.7° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Permian (298.9 - 251.9 Ma)

• upper part of Unit 6, Early Permian

• group of beds-level stratigraphic resolution

Environment/lithology: shallow subtidal; packstone and lime mudstone

Size class: macrofossils

Primary reference: J. H. Stewart, R. Amaya-Martínez, R. G. Stamm, B. R. Wardlaw, G. D. Stanley, Jr. and C. H. Stevens. 1997. Stratigraphy and regional significance of Mississippian to Jurassic rocks in Sierra Santa Teresa, Sonora, Mexico. Revista Mexicana de Ciencias Geológicas 14(2):115-135 [M. Aberhan/S. Nurnberg/S. Nurnberg]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 39181: authorized by Martin Aberhan, entered by Sabine Nürnberg on 23.05.2004

Creative Commons license: CC BY (attribution)