Simojovel road section B-8223 (Eocene of Mexico)

Also known as Reef 3912

Where: Chiapas, Mexico (17.1° N, 92.7° W: paleocoordinates 18.8° N, 83.3° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: San Juan Formation (La Esperanza Group), Lutetian (47.8 - 41.3 Ma)

• middle part of the formation - age given as middle Eocene - most likely Lutetian (see coll. 45920)

• bed-level stratigraphic resolution

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

• thin coral biostrome (B-8223) and argillaceous sandstone below the biostrome (B-8222)

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 85736: authorized by Wolfgang Kiessling, entered by Uta Merkel on 14.01.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

Rotaliina
 Nummulitacea - Nummulitidae
 Orbitoidacea - Lepidocyclinidae
Anthozoa
 Scleractinia - Poritidae
"Goniopora taberi" = Goniopora reussiana
"Goniopora taberi" = Goniopora reussiana Duncan 1865 stony coral
 Scleractinia - Agariciidae
Cyathoseris allisoni n. sp. Frost and Langenheim 1974 stony coral
 Scleractinia - Siderastreidae
Sideroseris durhami Wells 1945 stony coral
 Scleractinia - Astrocoeniidae
Astrocoenia guantanamensis Vaughan 1919 stony coral
 Scleractinia - Dendrophylliidae
"Balanophyllia (Balanophyllia) santaelenensis n. sp." = Balanophyllia caulifera
"Balanophyllia (Balanophyllia) santaelenensis n. sp." = Balanophyllia caulifera Conrad 1847 stony coral
 Scleractinia - Faviidae
Cladocora bosquensis Frost and Langenheim 1974 stony coral