Morphological Attributes: Spines: non-spinose Microstructure: finely perforate Texture: smooth Coiling: trochospiral Spire: low / Umbilical depth: deep Chamberform on the umbilical side: triangular Keel: single keel / Lip: lip or rim / Tooth: no tooth First occurence: 016.26 / Last occurence: 013.87 |