Rhynchonellata - Rhynchonellida - Cyclothyridae
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: Rhynchonellida according to V. P. Makridin 1964
See also Gaetani 2019 and Williams et al. 2002
Sister taxa: Ancistrorhynchoidea, Antistrixia, Apodosiidae, Areella, Asiarhynchia, Atlanticocoelia, Barzellinia, Basilioloidea, Beichuanrhynchus, Borealirhynchia, Camarotoechioidea, Camarotoechioides, Cardinirhynchiidae, Corrugatimediorostrum, Dimerelloidea, Donella, Dorsisinus, Hemithiridoidea, Hypoleiorhynchus, Isjuminelina, Jacoburbirostridae, Lambdarinoidea, Langkawia, Laosia, Latirhynchia, Leiorhynchoides, Linxiangxiella, Miaohuangrhynchus, Mongolirhynchia, Neimongolella, Norelloidea, Omolonorhynchia, Paratetratomia, Paryphorhynchopora, Payuella, Perakia, Platyglossariorhynchus, Plekonina, Pompoecilorhynchus, Praecyclothyrididae, Protorhyncha, Pseudonudirostra, Pseudopugnax, Pugnacoidea, Rhynchonella guadalupae, Rhynchonella mundula, Rhynchonelloidea, Rhynchonelloidea, Rhynchoporoidea, Rhynchotetradoidea, Rhynchotrematoidea, Rhynchotretaoides, Rhynchotretina, Sacothyropsis, Salairotoechia, Sichuanrhynchus, Stenoscismatidina, Straelenia, Tanerhynchia, Tatjamoa, Togaella, Uncinuloidea, Uralotoechia, Wellerelloidea, Wulungguia, Yanbianella, Yarirhynchia, Yunshanella
Subtaxa: Cyclothyrinae
Ecology: stationary epifaunal suspension feeder
Distribution: there are no occurrences of Cyclothyridae in the database