Rhynchonellata - Rhynchonellida - Cyclothyrididae
Nom. transl. Dagys, nov. (ex. Cyclothyrinae Makridin, 1955)
Full reference: V. P. Makridin. 1964. Brakhiopody Yurskikh Otlozheniy Russkoy Platformy i Nekotorykh Prilezhashchikh k Ney Oblastey 1-390
Parent taxon: Hemithiridoidea according to M. Gaetani 2019
Sister taxa: Hemithirididae, Notosariidae, Septirhynchiidae, Tetrarhynchiidae
Subtaxa: none
Type: Cyclothyris
Ecology: stationary epifaunal suspension feeder
Distribution:
• Cretaceous of Antarctica (4 collections), Belgium (11), Bulgaria (7), Croatia (1), the Czech Republic (9), France (43), Germany (9), Greenland (1), Hungary (2), India (1), Italy (2), Kazakhstan (1), Mexico (1), Morocco (1), the Netherlands (6), Poland (2), Portugal (2), Romania (1), the Russian Federation (19), Serbia and Montenegro (2), Slovenia (2), South Africa (2), Spain (41), Sweden (1), Switzerland (52), Tunisia (1), Turkmenistan (1), Ukraine (5), the United Kingdom (39), United States (16: Arizona, California, Montana, North Carolina, Texas)
• Temaikan of New Zealand (21)
• Jurassic to Cretaceous of the Russian Federation (2)
• Jurassic of Algeria (2), Bulgaria (3), Canada (1: Yukon), Chile (41), China (4), Egypt (2), Ethiopia (7), France (77), Germany (14), Greece (1), Greenland (2), Hungary (2), India (3), Iran (2), Italy (11), Jordan (1), Kazakhstan (2), Madagascar (11), Nepal (1), New Caledonia (1), New Zealand (57), Poland (7), Portugal (2), Romania (2), the Russian Federation (23), Saudi Arabia (20), Serbia and Montenegro (5), Somalia (1), Spain (8), Switzerland (4), Tunisia (3), Turkmenistan (1), Ukraine (13), the United Kingdom (55), United States (4: California), Uzbekistan (1)
• Triassic of Austria (51), Bosnia and Herzegovina (9), Bulgaria (2), China (54), Hungary (18), Indonesia (6), Iran (10), New Caledonia (14), New Zealand (37), Papua New Guinea (1), Peru (7), Poland (2), Romania (3), the Russian Federation (4), Serbia and Montenegro (4), Slovakia (13), Turkey (1), United States (3: Alaska)
Total: 941 collections including 1129 occurrences