Helminthochiton

Helminthochiton is an extinct genus of polyplacophoran mollusc. Helminthochiton became extinct during the Permian period.^[1]

Helminthochiton Temporal range: Ordovician–Permian[1] PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Polyplacophora
Order:	Lepidopleurida
Family:	Leptochitonidae
Subfamily:	†Helminthochitoninae
Genus:	†Helminthochiton

Helminthochiton grayiae was recognised as the type species for Septemchiton. This was named for Elizabeth Gray who collected fossils at Girvan.^[2]

Helminthochiton thraivensis has been reassigned to the genus Phthipodochiton in 2012.^[3]