Morphological Attributes: Spines: non-spinose Microstructure: macroperforate Texture: muricate to pustulose Coiling: trochospiral Spire: low / Umbilical depth: deep Chamberform on the umbilical side: triangular Keel: no keel / Lip: no lip or rim / Tooth: no tooth First occurence: 049.6 / Last occurence: 042.30 |
type specimen holotype Paleogene Eocene Arabian Sea DSDP Leg23A Site 219 FEU-1006705 |