Protozoa - Nassellaria - Eucyrtidiidae
Parent taxon: Eucyrtidiacea according to P. De Wever et al. 2001
Sister taxa: Bekomidae, Eucyrtiidae, Lophocyrtiidae, Obeliscoitidae, Pseudodictyomitridae, Theocotylidae, Xitidae
Subtaxa: Artocapsa Artophormis Buryella Calocyclas Calocycloma Clathrocycloma Cymaetron Cyrtocapsa Cyrtocapsella Eostichomitra Eucyrtidium Gigi Guexella Lantus Lithopera Milax Phalangites Phormocyrtis Pseudoeucyrtis Schaumellus Solenotryma Stichocapsa Stichocorys Stichomitra Vistularia
Type: Eucyrtidium
Ecology: passively mobile planktonic omnivore
Distribution:
• Quaternary of Japan (8 collections)
• Pliocene of Ecuador (1)
• Miocene of Ecuador (2), Japan (2)
• Oligocene of New Zealand (2)
• Eocene of Cyprus (6), Peru (1)
• Paleocene of China (1), Cyprus (1), New Zealand (49)
• Cretaceous of Albania (7), Antarctica (1), Azerbaijan (3), Canada (4: Nunavut), Costa Rica (1), Czechia (1), Denmark (4), Germany (1), Greece (9), India (1), Italy (115), Japan (26), Malaysia (12), New Zealand (12), North Pacific (1), Oman (17), the Philippines (1), Poland (12), the Russian Federation (9), Slovakia (3), Türkiye (4), United States (10: California)
• Jurassic to Cretaceous of Italy (3)
• Jurassic of Albania (20), Antarctica (16), Armenia (2), Austria (1), Canada (104: British Columbia), China (1), Costa Rica (2), Germany (20), Greece (6), India (2), Indonesia (2), Italy (21), Japan (71), Mexico (10), New Zealand (2), Nicaragua (1), Oman (13), the Philippines (6), Romania (3), the Russian Federation (28), Slovakia (3), Slovenia (1), Spain (8), Switzerland (3), Türkiye (14), United States (44: Alaska, California, Oregon)
• Triassic of Albania (2), Italy (1)
Total: 737 collections including 1756 occurrences