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  • Cephalopods
  • Paleogeneral
  • Cephalopods
  • Paleogeneral
  • Birchby, W. H.
  • Colorado
  • North America
  • Pueblo County
  • United States
  • Colorado
  • North America
  • Pueblo County
  • United States
  • 1960s
  • NMNH - Paleobiology Dept.
  • Cephalopoda
  • Cephalopoda
  • Ammonoidea
  • Ammonoidea
  • Pseudocalycoceras dentonense (Moreman)
  • Pseudocalycoceras dentonense (Moreman)
  • Cretaceous
  • Cretaceous
  • Cenomanian
  • Cenomanian
  • Greenhorn Ls
  • Greenhorn Ls
  • Bridge Creek Ls Mbr
  • Bridge Creek Ls Mbr