Morphological Attributes: Spines: spinose Microstructure: finely perforate Texture: smooth Coiling: trochospiral Spire: low / Umbilical depth: shallow Chamberform on the umbilical side: triangular Keel: no keel / Lip: lip or rim / Tooth: no tooth First occurence: 022.96 / Last occurence: 021.12 |