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John Cassin

For the Australian rules footballer, see John Cassin (footballer). For the United States Navy officer, see John Cassin (naval officer).
John Cassin
BornSeptember 6, 1813
Upper Providence Township, Pennsylvania, U.S.
Died10 January 1869 (1869-01-11) (aged 55)
Philadelphia, Pennsylvania, U.S.
Resting placeLaurel Hill Cemetery, Philadelphia, Pennsylvania, U.S.
Known for
Scientific career
FieldsOrnithology, Naturalist

John Cassin (September 6, 1813 – January 10, 1869) was an American ornithologist from Pennsylvania. He worked as curator and Vice President at the Philadelphia Academy of Natural Sciences and focused on the systemic classification of the Academy's extensive collection of birds. He was one of the founders of the Delaware County Institute of Science and published several books describing 194 new species of birds. Five species of North American birds, a cicada, and a mineral are named in his honor.

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