Where: Baja California, Mexico (31.3° N, 116.4° W: paleocoordinates 29.4° N, 73.2° W)

When: upper Member (Alisitos Formation), Middle Albian (109.0 - 105.3 Ma)

• "the strata...are part of the upper member of the Alisitos Formation, and Allison (1955, 1974) assigned these rocks to the middle Albian Stage" (Squires and Saul 1997)

Environment/lithology: marine; lithology not reported

Size class: macrofossils

Primary reference: R. L. Squires and L. R. Saul. 1997. Review of bivalve genus Plicatula from Cretaceous and Lower Cenozoic strata of California and Baja California. Journal of Paleontology 71(2):287-298 [P. Holroyd/S. Tremblay/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 194018: authorized by Patricia Holroyd, entered by Susan Tremblay on 11.06.2018

Creative Commons license: CC BY (attribution)