Arnold

The taxon authority Arnold may refer to:

Chester Arthur Arnold (1901–1977), U.S. paleobotanist
Don C. Arnold, U.S. entomologist
Douglas L. Arnold, herpetologist
Edwin Nicholas Arnold (1940–2023), British herpetologist
Ferdinand Christian Gustav Arnold (1829–1901; Arnold), German lichenologist
George Arnold (1881–1962), entomologist
Jennifer Mary Arnold (died 1989), Australian zoologist
Johann Franz Xaver Arnold (1730–1801; J.F.Arnold), Austrian botanist
Paula Arnold (fl. 1972; P.Arnold), mycologist
Rachel J. Arnold, ichthyologist
Ralph Arnold (1875–1961), U.S. palaeontologist
Spencer Arnold, U.S. malacologist
Trevor Henry Arnold (born 1947; T.H.Arnold), botanist

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