Observations on a new genus of fossil shells - 1818
Notice of the Plesiosaurus, and other fossil Reliquiae, form the State of New Jersey - 1824
On two genera and several species of Crinoidea - 1825
Description of a new species of crocodile from the Miocene of Virginia - 1852
Descriptions of new species of American Tertiary and Cretaceous fossils - 1860
Description of a collection of fossils made by Dr. Antonio Raimondi in Peru - 1877
Description of vertebrate remains, chiefly from the phosphate beds of South Carolina - 1877