ammonites
CIT Loc. 975 - El Toro [Pleasants Sandstone] (Cretaceous of the United States)

Where: Orange County, California (33.6° N, 117.7° W: paleocoordinates 39.4° N, 87.8° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Pleasants Sandstone Formation, Late/Upper Campanian (83.5 - 70.6 Ma)

• LITHOSTRATIGRAPHIC RELATIONS: From the Pleasants Sandstone, for which lithostratigraphic relationships are not discussed. AGE: Upper Campanian in text; on the basis of ammonite biostratigraphy. STRATIGRAPHIC POSITION: Not stated in text.

• bed-level stratigraphic resolution

Environment/lithology: coastal; lithified sandstone

• ENVIRONMENT: Not reported in text, but apparently shallow marine siliciclastic.
• LITHOLOGY: Sandstone. LITHIFICATION: Lithified, on the basis of figured specimens.

Size class: macrofossils

Collected by Popenoe in 1933

Collection methods: surface (in situ),

• COLLECTOR: Popenoe, 1933. REPOSITORY: California Institute of Technology (at the time).

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 86793: authorized by Austin Hendy, entered by Austin Hendy on 17.02.2009

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