Jean Louis Rodolphe Agassiz was a Swiss-American biologist and geologist recognized as an innovative and prodigious scholar of Earth's natural history, with later American writings that have received scrutiny because of particular racial themes. Agassiz grew up in Switzerland, and studied and received Doctor of Philosophy and medical degrees at Erlangen and Munich, respectively. After further studies with Cuvier and Humboldt in Paris, Agassiz proceeded with research leading to his appointment as professor of natural history at University of Neuchâtel. After visiting Harvard University mid-career, he emigrated to the U.S. in 1847 and became a professor of zoology and geology at Harvard, and to head its Lawrence Scientific School and found its Museum of Comparative Zoology. Agassiz made extensive contributions to ichthyological classification and to the study of geological history, and has become broadly known through study of his thorough regimen of observational data gathering and analysis. He made vast institutional and scientific contributions to zoology, geology, and related areas—including many multi-volume research series running to thousands of pages. Nevertheless, his reputation has suffered somewhat in hindsight by the evidence of his resistance to Darwinian evolution, and his later writings on human polygenism.

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