Where: Larimer County, Colorado (40.5° N, 105.1° W: paleocoordinates 46.9° N, 74.5° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Baculites reesidei ammonoid zone, Larimer Sandstone Member (Pierre Shale Formation), Late/Upper Campanian (83.5 - 70.6 Ma)
• group of beds-level stratigraphic resolution
Environment/lithology: marine; lithified sandstone
Size class: macrofossils
Collected by T.W. Stanton in 1890; reposited in the USNM
Primary reference: W. J. Kennedy, W. A. Cobban, and G. R. Scott. 2000. Heteromorph ammonites from the Upper Campanian (Upper Cretaceous) Baculites cuneatus and Baculites reesidei zones of the Pierre Shale in Colorado, USA. Acta Geologica Polonica 50:1-20 [M. Clapham/M. Clapham]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 178541: authorized by Matthew Clapham, entered by Matthew Clapham on 07.05.2016
Creative Commons license: CC BY (attribution)
Taxonomic list
Cephalopoda | |
Anaklinoceras minutum Kennedy et al. 2000 ammonite |