Lithotrochus is a genus of marine trochid gastropods mainly known from the Early Jurassic epoch of South America. While long considered endemic to the fossil record of South America, findings from the Pogibshi Formation of Alaska suggest that the genus expanded its paleogeographical range from the Northern Hemisphere to South America during the Jurassic.
References
External links
Collection of L. humdboldtii at National Museum of Natural History, France 3D model of Lithotrochus sp. at Sketchfab