ammonites
Chimalhuacan-Atenco Capa IV (Pleistocene of Mexico)

Also known as Tzocuilco

Where: Mexico, Mexico (19.0° N, 98.8° W: paleocoordinates 19.1° N, 98.6° W)

When: Pleistocene (2.6 - 0.0 Ma)

• bed/horizon: Capa IV

Environment/lithology: terrestrial

• green-grey clay with sand, average thickness 0.30 m; possibly represents the Becerra Fm.; underlies unit III, overlies unit V

Collection methods: quarrying

Primary reference: A. Garcia Cook. 1968. Chimalhuacan: Un artefacto asociado a megafauna. Publicaciones, Departamento de Prehistoria, Instituto Nacional de Antropologia e Historia 21:1-42 [J. Alroy/J. Alroy] more details

PaleoDB collection 71319: authorized by John Alroy, entered by John Alroy on 16.02.1999

Creative Commons license: CC BY-NC-ND (attribution-noncommercial-no derivatives)