. The descent of man, and selection in relation to sex. Evolution; Natural selection; Sexual selection in animals; Human beings -- Origin; Sexual dimorphism (Animals). Fig. 18.—Dipelicus Fig. 19.—Onthophagus rangifer, Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Darwin, Charles, 1809-1882. New York : D. Appleton and Co.

---

Size: 2036px × 1228px
Photo credit: © Paul Fearn / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., boo, bookcentury1800, bookdecade1870, booksubjectnaturalselection