Prof. Joseph Leidy, MD

http://dla.library.upenn.edu/dla/archives/image.html?start=150&fq=c...

http://www.findagrave.com/cgi-bin/fg.cgi?page=gr&GSln=Leidy&GSfn=Jo...

https://en.wikipedia.org/wiki/Joseph_Leidy

He was an American paleontologist and a professor of anatomy at the Univ. of Penn. as well as a doctor.

Leidy was professor of anatomy at the University of Pennsylvania, and later was a professor of natural history at Swarthmore College. His book Extinct Fauna of Dakota and Nebraska (1869) contained many species not previously described and many previously unknown on the North American continent. At the time, scientific investigation was largely the province of wealthy amateurs.