The lecture of the sturgeon-skate - Chapter 4 of "Impressions d'Africa" Raymond Roussel -

Martignon, the ichthyologist

David Starr Jordan, Ph.D., LL.D. (1851 – 1931) American ichthyologist　[] 1898ー1921 American Anti-Imperialist League

Edward Drinker Cope (1840 – 1897) American herpetologist and ichthyologist .