Jon Iapetus Smith Steenstrup, Norwegian zoologist, c 1870s.

NORWAY - SEPTEMBER 09: Carte de visite photograph by H J Whitlock of Birmingham of of Jon Iapetus Smith Steenstrup (1813-1897), Norwegian zoologist. Steenstrup was Professor of Zoology at Copenhagen University from 1845-1885, and made the first important contribution to the discipline of archaezoology when he identified animal remains from the Ertebolle Settlements and shell mounds in Scandinavia in 1851. (Photo by SSPL/Getty Images)