Where: Bexar County, Texas (29.4° N, 98.7° W: paleocoordinates 34.8° N, 72.0° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Anacacho Limestone Formation, Early/Lower Campanian to Early/Lower Campanian (83.5 - 70.6 Ma)

• Swezey and Sullivan (2004) correlate the Anacacho LS to the Baculites sp. (weak flank ribs), Baculites sp. (smooth) zone, which is late upper Campanian in Gradstein et al., 2004, through the Baculites maclearni zone, which is middle Campanian in Gradstein et al., 2004.

• bed-level stratigraphic resolution

Environment/lithology: marine; limestone

Size class: macrofossils

Collected by A.N. Sayre; reposited in the USNM

Primary reference: C. W. Cooke. 1953. American Upper Cretaceous Echinoidea. United States Geological Survey Professional Paper 254-A:1-44 [W. Kiessling/U. Merkel/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 197715: authorized by Matthew Clapham, entered by Matthew Clapham on 23.11.2018

Creative Commons license: CC BY (attribution)