†family Dayiidae Waagen 1883 (lamp shell)
Rhynchonellata - Athyridida - Dayiidae
Parent taxon: Dayioidea according to A. Williams et al. 2002
See also Bassett and Cocks 1974, Macomber 1970 and Mitchell 1977
Sister taxa: none
Subtaxa: Dayia Dayiinae Protozeuga
Ecology: stationary low-level epifaunal suspension feeder
Distribution:
• Devonian of the Czech Republic (1 collection), Ukraine (2)
• Silurian to Devonian of the Czech Republic (1)
• Silurian of Belarus (4), Canada (1: Northwest Territories), the Czech Republic (14), Estonia (3), France (1), Latvia (5), Lithuania (43), Morocco (1), Poland (2), the Russian Federation (5), Sweden (6), Tajikistan (1), Ukraine (11), the United Kingdom (37)
Total: 138 collections including 148 occurrences