Where: Medina County, Texas (29.4° N, 99.2° W: paleocoordinates 34.9° N, 72.5° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Baculites maclearni ammonoid zone, Anacacho Limestone Formation, Middle Campanian (83.5 - 70.6 Ma)

• Anacacho Limestone or lower part of Taylor Marl. Swezey and Sullivan (2004) correlate this section to the Baculites maclearni zone, which is middle Campanian in Gradstein et al., 2004.

• bed-level stratigraphic resolution

Environment/lithology: limestone

Size class: macrofossils

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 78169: authorized by Wolfgang Kiessling, entered by Uta Merkel on 30.01.2008

Creative Commons license: CC BY (attribution)