Morphological Attributes: Wallmaterial: hyaline Overall appearance: elongate Coiling: biserial Chamberform: brick Aperture Position: basal Aperture Form: round oval reniform, tooth, no neck, no lip Sutures: depressed, curved, -- Ornamentation: --, --, --, -- |
type specimen holotype Cretaceous Upper Cretaceous unknown FEU-1022361 | type specimen holotype Cretaceous Upper Cretaceous Mexico and Middle America unknown FEU-1008592 |