Where: Morgan County, Colorado (40.4° N, 103.9° W: paleocoordinates 46.9° N, 79.8° W)
• coordinate stated in text
• outcrop-level geographic resolution
When: Hoploscaphites birkelundae ammonoid zone, Fox Hills Formation, Late/Upper Maastrichtian (70.6 - 66.0 Ma)
• Middle sandy unit, Fox Hills Formation
• bed-level stratigraphic resolution
Environment/lithology: marine; lithified sandstone
Size class: macrofossils
Reposited in the YPM
Primary reference: N. H. Landman and W. A. Cobban. 2003. Ammonites from the upper part of the Pierre Shale and Fox Hills Formation of Colorado. American Museum Novitates 3388:1-45 [M. Clapham/M. Clapham]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 178296: authorized by Matthew Clapham, entered by Matthew Clapham on 30.04.2016
Creative Commons license: CC BY (attribution)
Taxonomic list
Cephalopoda | |
Hoploscaphites birkelundae Landman and Waage 1993 ammonite |