Where: Larimer County, Colorado (40.8° N, 105.1° W: paleocoordinates 47.2° N, 74.4° W)
• coordinate stated in text
• outcrop-level geographic resolution
When: Baculites reesidei ammonoid zone, Pierre Shale Formation, Late/Upper Campanian (83.5 - 70.6 Ma)
• Pierre Shale, 3 m below Richard Sandstone Member
• group of beds-level stratigraphic resolution
Environment/lithology: marine; lithified shale
Size class: macrofossils
Collected by R.G. Coffin in 1932; 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 178528: authorized by Matthew Clapham, entered by Matthew Clapham on 06.05.2016
Creative Commons license: CC BY (attribution)
Taxonomic list
Cephalopoda | |
Solenoceras texanum Shumard 1861 ammonite
Lewyites oronensis Lewy 1969 ammonite | |
Cirroceras conradi, Nostoceras larimerense, Anaklinoceras minutum, "Nostoceras cf. obtusum" = Nostoceras (Didymoceras) obtusum
Cirroceras conradi Morton 1841 ammonite
Nostoceras larimerense Kennedy et al. 2000 ammonite
Anaklinoceras minutum Kennedy et al. 2000 ammonite
"Nostoceras cf. obtusum" = Nostoceras (Didymoceras) obtusum Howarth 1965 ammonite |