†family Gryphochitonidae Pilsbury 1900 (chiton)
Polyplacophora - Neoloricata - Gryphochitonidae
Full reference: H. A. Pilsbury. 1900. Amphineura. Textbook of Paleontology 433-436
Parent taxon: Cymatochitonina according to R. D. Hoare 2002
See also Hanger et al. 2000 and Hoare et al. 2002
Sister taxon: Cymatochitonidae
Subtaxa: Aaptochiton Chauliochiton Chonechiton Gryphochiton
Ecology: facultatively mobile epifaunal grazer
Distribution:
• Permian of Japan (1 collection), United States (7: Nevada, Oregon, Texas)
• Silurian of United States (1: California)
Total: 9 collections including 12 occurrences