Where: Socorro County, New Mexico (34.4° N, 107.5° W: paleocoordinates 35.1° N, 71.2° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Sciponoceras gracile ammonoid zone, Rio Salado Tongue Member (Mancos Shale Formation), Cenomanian (100.5 - 93.9 Ma)

• STRATIGRAPHIC RELATIONS: From the Rio Salado Tongue of the Mancos Shale, which overlies the Dakota Sandstone, and is overlain by the Tres Hermanos Fm. AGE: Turonian, on the basis of ammonite biostratigraphy (in text); revised to Cenomanian by A. Hendy 5/2009 (Sciponoceras gracile zone). STRATIGRAPHIC POSITION: From unit 4, near base of section.

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified, nodular, gray, yellow, argillaceous limestone

Size class: macrofossils

Collected by Massingill & Hook in 1977; reposited in the USNM

Collection methods: surface (in situ),

• COLLECTOR: Massingill & Hook, 1977. REPOSITORY: USNM.

Primary reference: S. C. Hook, C. M. Molenaar, and W. A. Cobban. 1983. Stratigraphy and revision of nomenclature of upper Cenomanian to Turonian (Upper Cretaceous) rocks of west-central New Mexico. New Mexico Bureau of Mines and Mineral Resources Circular 185:7-28 [A. Hendy/A. Hendy]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 88813: authorized by Austin Hendy, entered by Austin Hendy on 21.04.2009

Creative Commons license: CC BY (attribution)