Where: Mexico (23.6° N, 100.8° W: paleocoordinates 19.3° N, 52.4° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: El Pastor Member (La Caja Formation), Early/Lower Tithonian (150.8 - 145.0 Ma)

• 14 m above base of section. Upper El Pastor Member, Virgatosphinctinae beds

• group of beds-level stratigraphic resolution

Environment/lithology: lithified limestone

Size class: macrofossils

Collection methods: surface (float)

• Repository: McMaster University

Primary reference: H. M. Verma and G. E. G. Westermann. 1973. The Tithonian (Jurassic) ammonite fauna of Sierra Catorce, San Luis Potosi, Mexico. Bulletins of American Paleontology 63(277):107-320 [P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 197760: authorized by Matthew Clapham, entered by Matthew Clapham on 25.11.2018

Creative Commons license: CC BY (attribution)