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Pierre Shale - Larimer Sandstone, Larimer County, Colorado, USA

FormationPierre Shale
MemberLarimer Sandstone
Age:83.5 - 70.6 Ma
Late/Upper Cretaceous
IntervalLate Campanian
Lithologysandstone, "shale"
Number of Collections12
Number of Occurrences36

Recorded Sample Locations

LocationRegionStratigraphic Name
USGS Mesozoic D371Larimer County, Colorado, USAPierre Shale - Larimer Sandstone
USGS Mesozoic D1465Larimer County, Colorado, USAPierre Shale - Larimer Sandstone
USGS Mesozoic D300Larimer County, Colorado, USAPierre Shale - Larimer Sandstone
USGS Mesozoic D2846Larimer County, Colorado, USAPierre Shale - Larimer Sandstone
USGS Mesozoic D301Larimer County, Colorado, USAPierre Shale - Larimer Sandstone
USGS Mesozoic D2701Larimer County, Colorado, USAPierre Shale - Larimer Sandstone
USGS Mesozoic D2824Larimer County, Colorado, USAPierre Shale - Larimer Sandstone
USGS Mesozoic D2825Larimer County, Colorado, USAPierre Shale - Larimer Sandstone
USGS Mesozoic D1566Larimer County, Colorado, USAPierre Shale - Larimer Sandstone
USGS Mesozoic 16093Larimer County, Colorado, USAPierre Shale - Larimer Sandstone

Associated Units

Stratigraphic NameAgeLithologyOccurrence Records
Pierre Shale - Richard Sandstone83.5 - 70.6 Ma
Late/Upper Cretaceous
sandstone6

Recorded Fossils

Accepted NameHierarchyAge
Baculites sp.
genus
6Animalia : Mollusca : Cephalopoda : Ammonoidea : Baculitidae : Baculites83.5 - 70.6 Ma
Late/Upper Cretaceous
Lewyites sp.
genus
6Animalia : Mollusca : Cephalopoda : Ammonoidea : Diplomoceratidae : Lewyites83.5 - 70.6 Ma
Late/Upper Cretaceous
Lewyites oronensis
species
7Animalia : Mollusca : Cephalopoda : Ammonoidea : Diplomoceratidae : Lewyites : Lewyites oronensis83.5 - 70.6 Ma
Late/Upper Cretaceous
Solenoceras reesidei
species
7Animalia : Mollusca : Cephalopoda : Ammonoidea : Diplomoceratidae : Solenoceras : Solenoceras reesidei83.5 - 70.6 Ma
Late/Upper Cretaceous
Solenoceras texanum
species
7Animalia : Mollusca : Cephalopoda : Ammonoidea : Diplomoceratidae : Solenoceras : Solenoceras texanum83.5 - 70.6 Ma
Late/Upper Cretaceous
Anaklinoceras minutum
species
7Animalia : Mollusca : Cephalopoda : Ammonoidea : Nostoceratidae : Anaklinoceras : Anaklinoceras minutum83.5 - 70.6 Ma
Late/Upper Cretaceous
Cirroceras conradi
species
7Animalia : Mollusca : Cephalopoda : Ammonitida : Nostoceratidae : Cirroceras : Cirroceras conradi83.5 - 70.6 Ma
Late/Upper Cretaceous
Nostoceras approximans
species
7Animalia : Mollusca : Cephalopoda : Ammonitida : Nostoceratidae : Nostoceras : Nostoceras approximans83.5 - 70.6 Ma
Late/Upper Cretaceous
Nostoceras larimerense
species
7Animalia : Mollusca : Cephalopoda : Ammonoidea : Nostoceratidae : Nostoceras : Nostoceras larimerense83.5 - 70.6 Ma
Late/Upper Cretaceous
Nostoceras splendidum
species
7Animalia : Mollusca : Cephalopoda : Ammonoidea : Nostoceratidae : Nostoceras : Nostoceras splendidum83.5 - 70.6 Ma
Late/Upper Cretaceous
Jeletzkytes nodosus
species
7Animalia : Mollusca : Cephalopoda : Ammonitida : Scaphitidae : Jeletzkytes : Jeletzkytes nodosus83.5 - 70.6 Ma
Late/Upper Cretaceous
Rhaeboceras halli
species
7Animalia : Mollusca : Cephalopoda : Ammonoidea : Scaphitidae : Rhaeboceras : Rhaeboceras halli83.5 - 70.6 Ma
Late/Upper Cretaceous
Rhaeboceras subglobosum
species
7Animalia : Mollusca : Cephalopoda : Ammonoidea : Scaphitidae : Rhaeboceras : Rhaeboceras subglobosum83.5 - 70.6 Ma
Late/Upper Cretaceous

References

Cobban W. A. (1987) The Upper Cretaceous ammonite Rhaeboceras Meek in the western interior of the United States, United States Geological Survey Professional Paper 1477, 1-15
Kennedy W. J., Cobban W. A., et al (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
Data courtesy of: PBDB: The Paleobiology Database, Creative Commons CC-BY licenced. , GBIF: the Global Biodiversity Information Facility, various licences, iDigBio, various licences, and EOL: The Encyclopedia of Life (Open Data Public Domain). Because fossils are made of minerals too!
 
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