John Mason Clarke

John Clarke; J.M.Clarke; John M. Clarke

April 15, 1857 – May 29, 1925

botanist, paleontologist, geologist, university teacher, teacher

American geologist and paleontologist (1857–1925)

http://www.wikidata.org/entity/Q3809155

https://en.wikipedia.org/wiki/John_Mason_Clarke [View]

United States