Where: Cibola County, New Mexico (35.0° N, 107.1° W: paleocoordinates 37.5° N, 73.5° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Collignoniceras woollgari ammonoid zone, Rio Salado Member (Mancos Shale Formation), Middle Turonian (93.5 - 89.3 Ma)

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified shale

Size class: macrofossils

Collected by S.C. Hook in 1981; reposited in the USNM

Primary reference: W. A. Cobban. 1988. The Late Cretaceous ammonite Spathites Kummel & Decker in New Mexico and Trans-Pecos Texas. New Mexico Bureau of Mines & Mineral Resources Bulletin 114:5-21 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 178515: authorized by Matthew Clapham, entered by Matthew Clapham on 06.05.2016

Creative Commons license: CC BY (attribution)