Morphological Attributes: Spines: non-spinose Microstructure: finely perforate Texture: bulloides-type 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: 009.44 / Last occurence: 004.60 |