Rhynchonellata - Terebratulida - Gibbithyrididae
Parent taxon: Terebratuloidea according to A. Williams et al. 2006
Sister taxa: Capillithyrididae, Eichwaldithyris, Heligothyris, Ilyinella, Longithyris, Najdinothyris, Oleneothyris, Sellithyrididae, Terebratulidae, Weberithyrididae
Subtaxa: Carneithyridinae Gibbithyridinae Rhombariinae
Type: Gibbithyris
Ecology: stationary low-level epifaunal suspension feeder
Distribution:
• Eocene of Austria (1 collection), Germany (1), Hungary (11), Switzerland (17)
• Paleocene of Denmark (11)
• Cretaceous of Belgium (3), Bulgaria (1), Denmark (3), France (5), Germany (30), India (2), Kazakhstan (2), Madagascar (3), the Netherlands (2), North Atlantic (3), Poland (4), Spain (1), Sweden (2), the United Kingdom (24), United States (1: Arizona), Uzbekistan (1)
Total: 128 collections including 142 occurrences