J. Frank Daniel
William C. Hamlett
David A. Ebert
Franz Leydig
Jan Willem van Wijhe
Charles Lucian Bonaparte
Fao
Kenneth J. Goldman
C. Gegenbaur
Joseph Mayr
Gustaf Retzius
Nikolaĭ Nikolaevich Miklukho-Maklaĭ
Karl Hasse
A. F. J. C. Mayer
Cresswell Shearer
Todd Rowe
Hans Friedrich Gadow
Food and Agriculture Organization (FAO)
Unknown Author