Morphological Attributes: Wallmaterial: hyaline Overall appearance: elongate Coiling: biserial Chamberform: triangular to trapezoid Aperture Position: basal Aperture Form: round oval reniform, tooth, no neck, no lip Sutures: depressed, curved, -- Ornamentation: --, --, --, -- |
type specimen holotype Quaternary Pleistocene unknown FEU-1022476 | type specimen holotype Quaternary Pleistocene Western Canada and USA unknown FEU-1007661 |