Where: Socorro County, New Mexico (34.4° N, 107.4° W: paleocoordinates 37.0° N, 74.0° W)

• coordinate estimated from map

• small collection-level geographic resolution

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

• From "first prominent sandstone above Dakota" (Tres Hermanos)

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified sandstone

Size class: macrofossils

Collected by D.E. Winchester, H.M. Robinson, W.T. Thom in 1913; 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 178792: authorized by Matthew Clapham, entered by Matthew Clapham on 15.05.2016

Creative Commons license: CC BY (attribution)