Key to Species Articles
About
|
Morphological Attributes: Spines: spinose Microstructure: macroperforate Texture: cancellate irregular Coiling: trochospiral Spire: low / Umbilical depth: neither deep nor shallow Chamberform on the umbilical side: subspherical to trapezoid Keel: no keel / Lip: no lip or rim / Tooth: no tooth First occurence: 029.18 / Last occurence: 020.94 |
 identified by scientist Paleogene Oligocene Chattian off Biscaya and Iberia DSDP Leg 47 Site 398 |