USGS Loc. 7201, Bluff N of Dulce [Lewis Shale] (Cretaceous of the United States)

Also known as Loc. 63 (of Kennedy et al. 2000)

Where: Rosebud County, New Mexico (36.9° N, 107.0° W: paleocoordinates 43.9° N, 78.0° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Lewis Shale Formation, Late/Upper Campanian (83.5 - 70.6 Ma)

• STRATIGRAPHIC RELATIONS: From the Lewis Shale, for which lithostratigraphic relations are not discussed. AGE: Late Campanian, on the basis of ammonoid. STRATIGRAPHIC POSITION: About 150 m below top of formation.

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified shale

• ENVIRONMENT: Marine siliciclastic.
• SPECIFIC LITHOLOGY: Shale. LITHIFICATION: Lithified, on the basis of figured specimens.

Size class: macrofossils

Preservation: mold/impression, concretion

Collected by Lee in 1911; reposited in the USNM

Collection methods: surface (in situ),

• COLLECTOR: Lee, 1911. REPOSITORY: USNM.

Primary reference: W. J. Kennedy, N. H. Landman, W. A. Cobban and G.R. Scott. 2000. Late Campanian (Cretaceous) heteromorph ammonites. Bulletin of the American Museum of Natural History 251:1-88 [A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 88466: authorized by Austin Hendy, entered by Austin Hendy on 12.04.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Limited to heteromorph ammonites, and other taxa from secondary publications. NOMENCLATURE: An authoritative publication, with modern nomenclature, and species-resolution identifications.
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