Family Skeneopsidae Iredale 1915 (periwinkle)
Gastropoda - Sorbeoconcha - Skeneopsidae
Parent taxon: Littorinoidea according to P. Bouchet et al. 2017
See also Bouchet et al. 2005, Marquet 1997 and Ponder and Warén 1988
Sister taxa: none
Subtaxa: Skeneopsis Starkeyna
Ecology: epifaunal grazer
Distribution:
• Quaternary of Ecuador (1 collection), Iceland (2), the Netherlands (1), Portugal (1), United States (3: Alaska, California)
• Pliocene of Belgium (1)
• Miocene of Ukraine (1)
Total: 10 collections each including a single occurrence