Nicolaus Michael Oppel
He was a student of , and worked as an assistant to , André Marie Constant Duméril ( 1774-1860 ) at the Muséum national d'histoire naturelle in Paris , France , cataloging and classifying species of reptiles . 
<triplet> André Marie Constant Duméril <subj> Muséum national d'histoire naturelle <obj> employer <triplet> Muséum national d'histoire naturelle <subj> Paris, France <obj> location