Also known as API-4

Where: Oaxaca, Mexico (17.6° N, 97.1° W: paleocoordinates 15.7° S, 50.3° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Ixaltepec Formation, Morrowan to Morrowan (323.2 - 306.0 Ma)

• bed-level stratigraphic resolution

Environment/lithology: coastal; lithified, lenticular, concretionary, gray, calcareous shale

Size class: macrofossils

Primary reference: S. A. Quiroz-Barroso and M. Del Carmen Perrilliat. 1998. Pennsylvanian bivalves from the Ixaltepec formation, Mexico. Journal of Paleontology 72(6):1011-1024 [J. Alroy/C. Simpson/C. Simpson]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 44290: authorized by John Alroy, entered by Carl Simpson on 08.09.2004, edited by Pedro Monarrez

Creative Commons license: CC BY (attribution)