Where: New Mexico (36.4° N, 104.6° W: paleocoordinates 40.6° N, 72.1° W)

• coordinate based on nearby landmark

• basin-level geographic resolution

When: Clioscaphites vermiformis ammonoid zone, Smoky Hill Shale Member (Niobrara Formation), Middle Santonian (85.8 - 83.5 Ma)

• STRATIGRAPHIC RELATIONS: From the Lower Shale of the Smokey Hill Shale, Niobrara Fm, which regionally overlies the Carlisle Shale . AGE: Middle Coniacian-Early Santonian, on the basis of inoceramid and ammonite biostratigraphy. STRATIGRAPHIC POSITION: List representative of the sandstone unit of the Smokey Hill Shale.

• group of beds-level stratigraphic resolution

Environment/lithology: deep subtidal shelf; lithified sandstone

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 87848: authorized by Austin Hendy, entered by Austin Hendy on 26.03.2009

Creative Commons license: CC BY (attribution)