@misc{indiciae800693ba93d3, title = {Cephalopods from the Cretaceous/Tertiary boundary interval on the Atlantic Coastal Plain, with a description of the highest ammonite zones in North America. Part 1, Maryland and North Carolina / American Museum novitates — Illustration, Page 42}, year = {2004}, url = {https://www.biodiversitylibrary.org/page/60848118}, note = {Source identifier: page-60848118} }