Where: Sonora, Mexico (30.8° N, 112.5° W: paleocoordinates 7.4° N, 42.7° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Antimonio Formation, Spathian (251.3 - 247.2 Ma)

• Unit 29

• group of beds-level stratigraphic resolution

Environment/lithology: marine; red packstone

Size classes: macrofossils, microfossils

Preservation: cast

Primary reference: S. G. Lucas, B. S. Kues, J. W. Estep and C. M. González-León. 1997. Permian-Triassic boundary at El Antimonio, Sonora, Mexico. Revista Mexicana de Ciencias Geológicas 14(2):149-154 [M. Aberhan/S. Nurnberg/S. Nurnberg]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 39202: authorized by Martin Aberhan, entered by Sabine Nürnberg on 23.05.2004

Creative Commons license: CC BY (attribution)