Where: Colima, Mexico (19.2° N, 103.7° W: paleocoordinates 22.3° N, 75.3° W)

• coordinate based on nearby landmark

When: Middle Albian to Middle Albian (109.0 - 105.3 Ma)

Environment/lithology: mixed carbonate-siliciclastic sediments

Primary reference: B.E. Buitron. 1973. Equinoides del Cretacico medio de Colima. Paleontologia Mexicana 36:21-29 [L. Villier/L. Villier/L. Villier] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 31305: authorized by Loic Villier, entered by Loic Villier on 03.05.2003