ammonites
San Antonio de las Salinas, Zapotitlan Formation, Puebla (Cretaceous of Mexico)

Where: Mexico (18.4° N, 97.5° W: paleocoordinates 16.0° N, 53.0° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Zapotitlan Formation, Barremian (130.0 - 125.5 Ma)

• bed-level stratigraphic resolution

Environment/lithology: open shallow subtidal; lithified claystone and lithified limestone

• '... at the end of the Neocomian and during the Aptian, the region of Zapotitlan-San Juan Raya was an area close to the coast, covered with shallow waters '
• 'The San Juan Raya foramtion... consists of a series of lutites, limestones and conglomerates... maximum thickness of 1000 meters.'

Size class: macrofossils

Preservation: mold/impression

Collection methods: collected by J. G. Aguilera in the end of the 19th century

Primary reference: G. A. d.e. Cserna. 1956. Pelecipidos y gasteropodos del Cretacico inferior de la region de San Juan Raya-Zapotitlan, Estado de Puebla. Paleontologia Mexicana (2)1-47 [M. Aberhan/S. Nurnberg/S. Nurnberg] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 69904: authorized by Martin Aberhan, entered by Sabine Nürnberg on 09.03.2007