American zoologists

American zoologist and ornithologist (1838–1921)

French-American anthropologist, zoologist and traveler

American lawyer, eugenicist, and conservationist (1865–1937)

American zoologist (1835–1915)

American zoologist, geneticist (1856–1939)

American malacologist, palaeontologist and explorer (1845 – 1927)

American zoologist (1875-1947)

American zoologist (1868-1962)

American zoologist (1879-1942)

U.S. zoologist (1839–1926)

U.S. entomologist, botanist and zoologist (1866–1948)

U.S. zoologist and ornithologist (1866–1924)

U.S. zoologist (1868–1955)

American zoologist (1870–1947)

U.S. zoologist (1876–1970)

American zoologist and ecologist (1877–1968)

American zoologist (1953–2018)

Portuguese American naturalist (1792–1851)

American zoologist (1865-1948)

United States naturalist (1847-1931)

U.S. zoologist (1870–1947)

American geoscientist (1928-2010)

American botanist, zoologist and ichthyologist (1877-1956)

American zoologist (1848–1908)

Swedish-American zoologist, entomologist and naturalist (1847–1940)

American herpetologist, writer, and natural history filmmaker (1876–1942)

American herpetologist (1912-2013)

American educational nature show host

American zoologist, parasitologist and botanical collector (1865–1945)

Noted zoologist and eugenicist (1868–1964)

American clergyman and naturalist (1804-1880)

American social activist, missionary, scientist, writer (1839-1916)

American biologist

U.S. malacologist and zoologist (1838–1888)

American ornithologist, zoologist, botanist and museum curator (1875-1942)

American zoologist (1873–1955)

American zoologist (1929–2018)

U.S. biologist (1858-1940)

American educational nature show host

American zoologist (1854–1929)

American marine zoologist (1878–1953)

American zoologist (1875–1957)

American scientist (1928-2009)

American zoologist (1851–1950)

American zoologist

Canadian zoologist, ecologist, and university teacher (born 1936)

Canadian-American ophthalmologist and ornithologist (1856–1942)

American zoologist

American zoologist

American zoologist and herpetologist (born 1961)

American pathologist (1884-1974)

American zoologist (1933–2010)

researcher

American zoologist (1869–1965)

early 20th century U.S. biologist