Invertebrate Paleontology

About the Collection

The Invertebrate Paleontology Collections at the Academy of Natural Sciences of Drexel University are the oldest in the United States and hold material collected and described by the earliest workers in American and British paleontology. The collection contains more than 5,000 lots of type material of more than 100 authors including Timothy A. Conrad, William M. Gabb, Henry C. Lea, Isaac Lea, Samuel G. Morton, Axel A. Olsson, Anne Harbison and Henry A. Pilsbry. Strengths of the collection are in Cenozoic and Cretaceous Mollusca of the New World, particularly the Atlantic and Gulf Coastal Plains; Quaternary Mollusca worldwide; and the Mesozoic of England. About 75% of the collection is molluscan fossils; total holdings are approximately 106,000 lots containing about 1,000,000 specimens.

Information on the type collection for the Invertebrate Paleontology Collection can be found at


paul callomon

Paul Callomon
Collection Manager

Mr Callomon is responsible for management of the Malacology and General Invertebrates collections. His field of academic interest is the mollusks of Japan and the history of molluscan science in that region. He is a co-author of the standard reference catalog of Japanese marine species.