Where: McKinley County, New Mexico (35.3° N, 108.8° W: paleocoordinates 38.2° N, 75.1° W)

• coordinate stated in text

• outcrop-level geographic resolution

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

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified, concretionary shale

Size class: macrofossils

Collected by E.R. Landis, W.A. Cobban in 1967; 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 178511: authorized by Matthew Clapham, entered by Matthew Clapham on 06.05.2016

Creative Commons license: CC BY (attribution)