Where: Sonora, Mexico (30.7° N, 112.6° W: paleocoordinates 17.1° N, 55.3° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Antimonio Formation, Hettangian to Hettangian (201.3 - 190.8 Ma)

• Hettangian?-Sinemurian?

• member-level stratigraphic resolution

Environment/lithology: marine

Size class: macrofossils

Preservation: mold/impression

Primary reference: S. E. Damborenea and C. M. González-León. 1997. Late Triassic and Early Jurassic bivalves from Sonora, Mexico. Revista Mexicana de Ciencias Geológicas 14(2):178-201 [M. Aberhan/S. Nurnberg/S. Nurnberg]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 39207: authorized by Martin Aberhan, entered by Sabine Nürnberg on 23.05.2004

Creative Commons license: CC BY (attribution)