ammonites
UCLA Loc. 3796 - San Antonio del Mar (Cretaceous of Mexico)

Where: Baja California, Mexico (30.7° N, 116.1° W: paleocoordinates 36.1° N, 92.6° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Early/Lower Maastrichtian (70.6 - 65.5 Ma)

• STRATIGRAPHIC RELATIONS: From an unknown lithostratigraphic unit. AGE: Early Maastrichtian, on the basis of ammonite biostratigraphy. STRATIGRAPHIC POSITION: Concretionary boulders at base of sea cliff; probably highest Cretaceous bed in area.

• bed-level stratigraphic resolution

Environment/lithology: coastal; lithified, concretionary siliciclastic sediments

• ENVIRONMENT: No environmental reported. Presumably shallow-water siliciclastic marine.
• SPECIFIC LITHOLOGY: Not stated in text, but presumably siliciclastic; concretionary. LITHIFICATION: Lithified, based on facies description.

Size class: macrofossils

Preservation: concretion

Collected by Popenoe et al

Collection methods: surface (in situ),

• COLLECTOR: W. P. Popenoe, H. Stager, G. Weir. REPOSITORY: UCLA.

Primary reference: T. Matsumoto. 1960. Upper Cretaceous ammonites of California. Part III. Memoirs of the Faculty of Science, Kyushu University Series D, Geology, Special Volume II 1-204 [A. Hendy/A. Hendy/A. Hendy] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 86862: authorized by Austin Hendy, entered by Austin Hendy on 22.02.2009

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