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Morphological Attributes: Wallmaterial: hyaline Overall appearance: elongate Coiling: biserial Chamberform: triangular to trapezoid Aperture Position: basal Aperture Form: arcuate lunear arch, --, --, -- Sutures: depressed, --, -- Ornamentation: --, --, --, -- |
identified by scientist Quaternary Holocene recent off Peru and Northern Chile Challenger Station 300 FEU-1003469 469 | ![]() |