1
Published: 2001
Superior document: US Geological Survey professional paper 1603
2
Published: 2007
Superior document: Cephalopods from the Cretaceous/Tertiary boundary interval on the Atlantic Coastal Plain, with a description of the highest ammonite zones in North America 3
3
Published: 2004
Superior document: Bulletin of the American Museum of Natural History ...
4
Published: 2004
Superior document: Cephalopods from the Cretaceous/Tertiary boundary interval on the Atlantic Coastal Plain, with a description of the highest ammonite zones in North America 2