Isaac Lea

Isaac Lea
Born	(1792-03-04)March 4, 1792 Wilmington, Delaware, U.S.
Died	December 8, 1886(1886-12-08) (aged 94) Philadelphia, Pennsylvania, U.S.
Resting place	Laurel Hill Cemetery, Philadelphia, Pennsylvania, U.S.
Spouse	Frances Ann Carey ​ ​ (m. 1821; died 1873)​
Children	3 (incl. Henry Charles Lea and Mathew Carey Lea)
Relatives	Mathew Carey (father-in-law)

Isaac Lea (March 4, 1792 – December 8, 1886) was an American publisher, conchologist and geologist. He was a partner in the publishing businesses Matthew Carey & Sons; Carey, Lea & Carey; Carey, Lea & Blanchard; and Lea & Blanchard.

He authored multiple books describing the freshwater mussel genus Unio and named 1,842 species of fifty genera of freshwater and land mollusks. He sparked a scientific controversy amongst geologists when he published about his discovery of fossilized footprints in Mount Carbon, Pennsylvania, that he incorrectly proposed were from a reptile from the Devonian Period over 360 million years old. The fossil has since been identified as that of an amphibian from the Mississippian Age over 330 million years old.

He served as president of the Academy of Natural Sciences of Philadelphia from 1858 to 1863 and of the American Association for the Advancement of Sciences in 1860.