@misc{indiciaec971e440897f, 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 15}, year = {2004}, url = {https://www.biodiversitylibrary.org/page/60848091}, note = {Source identifier: page-60848091} }