Where: Socorro County, New Mexico (34.4° N, 107.5° W: paleocoordinates 37.1° N, 74.0° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Collignoniceras woollgari ammonoid zone, Atarque Sandstone Member (Tres Hermanos Formation), Middle Turonian (93.5 - 89.3 Ma)

• STRATIGRAPHIC RELATIONS: From the Atarque Sandstone Mbr of the Tres Hermanos Fm, which overlies the Mancos Shale, and is overlain by the Carthage Mbr. AGE: Middle Turonian, on the basis of ammonoid biostratigraphy; Collignoniceras woollgari zone. STRATIGRAPHIC POSITION: From unit 18, near top of section.

• bed-level stratigraphic resolution

Environment/lithology: coastal; lithified, burrowed, gray, yellow, calcareous sandstone

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: W. A. Cobban and S. C. Hook. 1980. The Upper Cretaceous (Turonian) ammonite family Coilopoceratidae Hyatt in the Western Interior of the United States. United States Geological Survey Professional Paper 1192:1-28 [W. Kiessling/U. Merkel]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 88811: authorized by Austin Hendy, entered by Austin Hendy on 21.04.2009, edited by Matthew Clapham

Creative Commons license: CC BY (attribution)