Family Mopaliidae Dall 1889 (chiton)
Polyplacophora - Neoloricata - Mopaliidae
Parent taxon: Ischnochitonina according to R. T. Abbott 1974
See also Beesley 1998 and Wu and Lee 2024
Sister taxa: Pterygochiton, Schizochitonidae
Subtaxa: Amicula Heterochitoninae Katharina Katharininae Mopalia Mopaliinae Placiphorella Plaxiphora
Ecology: facultatively mobile epifaunal grazer
Distribution:
• Quaternary of Mexico (6 collections), United States (39: California)
• Pliocene of United States (1: California)
• Oligocene of New Zealand (1)
Total: 47 collections including 82 occurrences