Where: Guerrero, Mexico (18.0° N, 99.3° W: paleocoordinates 19.4° N, 70.5° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Mexcala Formation, Late/Upper Turonian (93.5 - 89.3 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified limestone and lithified sandstone

Size class: macrofossils

Preservation: mold/impression

Primary reference: C. Gonzalez-Arreola. 1977. Amonitas del Coniaciano (Cretacico superior) de la region de Tepetlapa, estado de Guerrero [Coniacian (Upper Cretaceous) ammonoids from the Tepetlapa region (Guerrero)]. Revista Universidad Nacional Autonoma de Mexico, Instituto de Geologia 1(2):167-173 [W. Kiessling/U. Merkel]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 100119: authorized by Wolfgang Kiessling, entered by Uta Merkel on 29.11.2010

Creative Commons license: CC BY (attribution)