Where: Pueblo County, Colorado (38.3° N, 104.7° W: paleocoordinates 38.1° N, 67.3° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Neocardioceras juddii ammonoid zone, Bridge Creek Member (Greenhorn Limestone Formation), Late/Upper Cenomanian (99.6 - 93.5 Ma)

• 3.6 m (12 ft) above base of Bridge Creek member (Cobban and Scott, 1972, bed 84).

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified limestone

Size class: macrofossils

Collected by W.H. Birchby in 1969; reposited in the USNM

Primary reference: W. A. Cobban. 1988. Tarrantoceras Stephenson and related ammonoid genera from Cenomanian (Upper Cretaceous) rocks in Texas and the western interior of the United States. United States Geological Survey Professional Paper 1473:1-30 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 177108: authorized by Matthew Clapham, entered by Matthew Clapham on 19.03.2016

Creative Commons license: CC BY (attribution)