Bed 10d (Cretaceous to of Mexico)

Where: San Luis Potosí , Mexico (23.6° N, 100.9° W: paleocoordinates 19.9° N, 53.3° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: El Verde Member (La Caja Formation), Early/Lower Berriasian to Early/Lower Berriasian (145.0 - 140.2 Ma)

Environment/lithology: lithified marl and ferruginous, silty limestone

• None
• The Upper most part of the section is characterized by 1.5 to 4.5 meters or marly and silty intercalations with several beds of silty limestones.

Size class: macrofossils

Preservation: cast, mold/impression

Collection methods: quarrying,

Primary reference: F. Olóriz, A. B. Villaseñor, C. Gonzalez-Arreola and G. E. G. Westermann. 1999. Ammonite Biostratigraphy and Correlations in the Upper Jurassic-Lowermost Cretaceous La Caja Formation of North-Central Mexico (Sierra de Catorce, San Luis de Potosí). In F. Olóriz, F. J. Rodríguez-Tovar (eds.), Advancing Research on Living and Fossil Cephalopods 550 [A. Rojas/A. Rojas]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 192474: authorized by Alexis Rojas, entered by Alexis Rojas on 09.04.2018

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Cephalopoda
 Ammonitida - Neocomitidae
Kossmatia sp.
Kossmatia sp. Uhlig 1907 ammonite