Where: Oaxaca, Mexico (17.3° N, 97.7° W: paleocoordinates 11.9° N, 50.0° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Early/Lower Kimmeridgian (155.7 - 150.8 Ma)

• Age is uncertain because the specimen occurred alone, but a latest Platynota to earliest Hypselocyclum age is promoted.

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified lithology not reported

Size class: macrofossils

Preservation: cast

Collection methods: Repository: collection of Cantú-Chapa

Primary reference: L. Moliner, F. Olóriz, and A. B. Villaseñor. 2016. Ataxioceras (Ataxioceras) lopeztichae Cantú-Chapa, 1991: updating the systematic and palaeobiogeographic interpretation. Palaeontologia Electronica 19(2.19A):1-16 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 180139: authorized by Matthew Clapham, entered by Matthew Clapham on 09.07.2016

Creative Commons license: CC BY (attribution)