Where: Colfax County, New Mexico (36.4° N, 104.5° W: paleocoordinates 38.3° N, 70.4° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Prionocyclus hyatti ammonoid zone, Codell Sandstone/Blue Hill Member (Carlile Shale Formation), Middle Turonian (93.5 - 89.3 Ma)

• Blue Hill Member of Carlile Shale and basal part of Codell Sandstone Member

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified shale

Size class: macrofossils

Collected by S.C. Hook in 1979; reposited in the USNM

Primary reference: W. A. Cobban and S. C. Hook. 1980. The Upper Cretaceous (Turonian) ammonite family Coilopoceratidae Hyatt in the Western Interior of the United States. United States Geological Survey Professional Paper 1192:1-28 [W. Kiessling/U. Merkel]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 178786: authorized by Matthew Clapham, entered by Matthew Clapham on 15.05.2016

Creative Commons license: CC BY (attribution)