Simojovel road section B-8120 (Eocene of Mexico)

Where: Chiapas, Mexico (17.0° N, 92.8° W: paleocoordinates 17.8° N, 86.1° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Ixtaclum Shale Formation (La Esperanza Group), Late/Upper Eocene (37.2 - 33.9 Ma)

• from the base of the formation

• bed-level stratigraphic resolution

Environment/lithology: deep subtidal; lithified wackestone

• depth of 35-50 m
• dark gray argillaceous biomicrite in siltstones and shales

Size classes: macrofossils, microfossils

Collection methods: peel or thin section,

Primary reference: S. H. Frost and R. L. Langenheim, Jr. 1974. Cenozoic Reef Biofacies. Chicago, Northern Illinois University Press 1-388 [W. Kiessling/W. Kiessling/U. Merkel]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 85734: authorized by Wolfgang Kiessling, entered by Uta Merkel on 14.01.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

 Orbitoidacea - Lepidocyclinidae
 Scleractinia - Merulinidae
Antillia clarki Durham 1946 stony coral
 Scleractinia - Caryophylliidae
Trochocyathus mexicanum Frost and Langenheim 1974 stony coral