†family Crassitudochitonidae Hoare and Karasawa 2008 (chiton)
Polyplacophora - Neoloricata - Crassitudochitonidae
Full reference: R. Hoare and H. Karasawa. 2008. Permian Polyplacophora (Mollusa) from the Akasaka Limestone, Gifu, Japan. Paleontological Research 12:321-327
Parent taxon: Lepidopleurina according to R. Hoare and H. Karasawa 2008
Sister taxa: Acutichitonidae, Choriplacidae, Glyptochitonidae, Hanleyidae, Homeochiton, Lepidopleuridae, Leptochitonidae, Ochmazochitonidae, Pyknochiton
Subtaxa: Crassitudochiton
Type: Crassitudochiton
Ecology: facultatively mobile epifaunal grazer
Distribution: found only at Ichihashi Quarry, Kinshozan, Akasaka (Permian of Japan)