Where: Michoacan, Mexico (18.5° N, 100.9° W: paleocoordinates 17.7° N, 58.0° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: lower Member (Cumburindio Formation), Aptian (125.0 - 113.0 Ma)

• Aptian or Barremian-Aptian

• member-level stratigraphic resolution

Environment/lithology: reef, buildup or bioherm; lithified limestone and lithified sandstone

Size class: macrofossils

Primary reference: G. Alencaster and J. Pantoja-Alor. 1996. The rudist Amphitriscoelus (Bivalvia-Hippuritacea) in the lower Cretaceous of southwestern Mexico. Journal of Paleontology 70(3):399-407 [A. Miller/S. Kolbe]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 115200: authorized by Arnold Miller, entered by Sarah Kolbe on 30.08.2011

Creative Commons license: CC BY (attribution)