Lithotrochus

Lithotrochus is a genus of marine trochid gastropods mainly known from the Early Jurassic epoch of South America.^[1][2][3][4] 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.^[5]

Lithotrochus Temporal range: 200–183 Ma PreꞒ Ꞓ O S D C P T J K Pg N Early Jurassic
Lithotrochus humboldtii of La Casilda fossil locality from Mulanguiñeu Formation
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Vetigastropoda
Order:	Trochida
Superfamily:	Trochoidea
Family:	Trochidae
Genus:	†Lithotrochus Conrad, 1855
Type species
†Lithotrochus humboldtii von Buch, 1839
Other species
†Lithotrochus rothi Damborenea & Ferrari, 2008
Synonyms
List †Pleurotomaria humboldtii von Buch, 1839 †Trochus andinus Möricke, 1894 †Turritella andii d'Orbigny, 1842