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Born Sept. 9, 1823, in Philadelphia; died there Apr. 30, 1891. American biologist. Professor of anatomy at the University of Pennsylvania (from 1853).
Leidy’s main works dealt with paleontology, zoology, comparative anatomy, and botany. His studies on reptiles of the Cretaceous and mammals of the Paleogene in North America are very well known. He elucidated the origin and history of development of several animal groups.
WORKSCretaceous Reptiles of the United States. Washington, 1865.
Researches in Helminthology and Parasitology. Washington, 1904.