Identified Chalicotheriidae

William Jacob Holland
Holland, William Jacob

* August 16, 1848 – December 13, 1932 †

United States

Identified Chalicotheriidae and collected Nymphalidae

Joseph Leidy
Leidy, Joseph

* September 09, 1823 – April 30, 1891 †

United States

Identified Rhinocerotidae and collected Juncaceae

Othniel Charles Marsh
Marsh, Othniel Charles

* October 29, 1831 – March 18, 1899 †

United States

Identified Caryocrinitidae and collected Caryocrinitidae