Where: Coahuila, Mexico (26.4° N, 102.9° W: paleocoordinates 2.0° S, 34.8° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: La Difunta Formation, Wordian (266.9 - 264.3 Ma)

• Trilobites located 62-64 m above base of formation, as well as 98-110 m above base. Presence of Waagenoceras fauna implies Wordian age.

• group of beds-level stratigraphic resolution

Environment/lithology: lithified, shelly/skeletal limestone

Size class: macrofossils

Collection methods: Repository: Museo Paleontológico La Laguna, Ciudad de Torreón, Coahuila

Primary reference: F. Sour-Tovar, S. A. Quiroz-Barroso, J. Quiroz-Barragán, M. A. Torres-Martínez, and S. González-Mora. 2016. Presencia de Anisopyge perannulata y Ditomopyge cf. D. whitei (Trilobita, Proetidae) en el Pérmico (Guadalupiano medio) de la Formación Las Delicias, Coahuila, norte de México. Paleontología Mexicana 5:103-109 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 183476: authorized by Matthew Clapham, entered by Matthew Clapham on 28.12.2016

Creative Commons license: CC BY (attribution)