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Morphological Attributes: Wallmaterial: hyaline Overall appearance: Coiling: Chamberform: Aperture Position: Aperture Form: , , , Sutures: , , Ornamentation: , , , |
type specimen Cretaceous Upper Cretaceous Mexico and Middle America unknown FEU-1007696 |  | type specimen Cretaceous Upper Cretaceous Mexico and Middle America unknown FEU-1007697 |  | type specimen Cretaceous Upper Cretaceous Mexico and Middle America unknown FEU-1007698 |  | type specimen Cretaceous Upper Cretaceous Mexico and Middle America unknown FEU-1007699 |  | type specimen holotype Cretaceous Upper Cretaceous Mexico and Middle America unknown FEU-1007694 |  |
type specimen holotype Cretaceous Upper Cretaceous Mexico and Middle America unknown FEU-1007695 |  | identified by scientist Paleogene Paleocene Danian North Africa El Kef FEU-1009298 |  | identified by scientist Paleogene Paleocene Thanetian North Africa Wadi Nukhl FEU-1009302 |  |