Antimonio Formation, Sections 1 and 2, Units 12 and 13 (Triassic of Mexico)

Where: Sonora, Mexico (30.7° N, 112.6° W: paleocoordinates 11.7° N, 54.0° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Antimonio Formation, Norian (228.0 - 208.5 Ma)

• Norian?

• member-level stratigraphic resolution

Environment/lithology: marine; siltstone and limestone

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 39206: authorized by Martin Aberhan, entered by Sabine Nürnberg on 23.05.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

 Pectinida - Limidae
 Carditida - Myophoricardiidae
Myophoriopis sonorensis clam
at section 1 [entered as Myophoriopsis sonorensis]
 Trigoniida - Myophoriidae
? Costatoria sp. clam
at section 2