Where: Chihuahua, Mexico (30.2° N, 104.8° W: paleocoordinates 29.3° N, 67.7° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Benevides Formation, Late/Upper Albian (105.3 - 99.6 Ma)

• STRATIGRAPHIC RELATIONS: From the Benevides. It is a lateral correlative of the Kiamichi Fm, slightly older than the Goodland and Comanche Peak Limestones, and slightly younger than the Georgetown Fm. AGE: Late Albian; Adkinsites bravoensis zone. STRATIGRAPHIC POSITION: From unknown position within formation.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified lithology not reported

Size class: macrofossils

Preservation: cast, mold/impression

Collected by Spiegelberg & Dill in 1960

• COLLECTOR: F. Spiegelberg & M. Dill, 1960. REPOSITORY: Most University of Texas (UT), but also Bureau of Economic Geology, University of Texas (BEG).

Primary reference: K. Young. 1966. Texas Mojsisoviciziinae (Ammonoidea) and the zonation of the Fredricksburg. Geological Society of America Memoir 100:1-225 [A. Hendy/A. Hendy/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 82880: authorized by Austin Hendy, entered by Austin Hendy on 03.08.2008

Creative Commons license: CC BY (attribution)