Where: Pueblo County, Colorado (38.3° N, 104.6° W: paleocoordinates 42.5° N, 71.4° W)

• coordinate based on nearby landmark

• basin-level geographic resolution

When: Clioscaphites saxitonianus ammonoid zone, Smoky Hill Shale Member (Niobrara Formation), Early/Lower Santonian (85.8 - 83.5 Ma)

• STRATIGRAPHIC RELATIONS: From the Smoky Hill Shale Mbr of the Niobrara Fm, which regionally overlies the First Hays Limestone and the Carlisle Shale . AGE: Late Coniacian-Late Santonian, on the basis of inoceramid and ammonite biostratigraphy. STRATIGRAPHIC POSITION: List representative of the the middle shale unit of the Smoky Hill Shale.

• group of beds-level stratigraphic resolution

Environment/lithology: deep subtidal shelf; lithified shale

Size class: macrofossils

Preservation: cast, mold/impression

Reposited in the UNSM

Collection methods: surface (in situ), ,

• COLLECTORS: Scott, Cobban, Merewether, and Buckhorn (1984). REPOSITORY: USNM.

Primary reference: G. R. Scott, W. A. Cobban, and E. A. Merewether. 1986. Stratigraphy of the Upper Cretaceous Niobrara Formation in the Raton basin, New Mexico. New Mexico Bureau of Mines and Mineral Resources Bulletin 115:1-34 [A. Hendy/A. Hendy]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 87852: authorized by Austin Hendy, entered by Austin Hendy on 26.03.2009

Creative Commons license: CC BY (attribution)