Joseph Leidy

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The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Leidy, Joseph


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.


Cretaceous Reptiles of the United States. Washington, 1865.
Researches in Helminthology and Parasitology. Washington, 1904.


Davitashvili, L. Sh. Istoriia evoliutsionnoi paleontologii ot Darvina do nashikh dnei. Moscow-Leningrad, 1948.
The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
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The dog heartworm was named Filaria by American parasitologist Joseph Leidy in 1856, and the genus was renamed Dirofilaria by French parasitologists Railliet and Henry in 1911.
Throughout the 1850s and 1860s, many of the collected fossils found their way east to the laboratory of Joseph Leidy in Philadelphia, where he described and published accounts of them, identifying and naming many new species, notably of mammals found in the Tertiary strata of the badlands in the upper Missouri.
Hayden Expedition in 1873 by Hayden and Joseph Leidy (whose portrait hangs on the 5th stack), and the Den Norske Nordhavs-Expedition, 1876-1878--seven volumes which had never been cataloged elsewhere.