smooth non-spinose

Classification: pf_cenozoic -> smooth non-spinose
Sister taxa: hidden, microperforate, muricate non-spinose, smooth non-spinose, spinose,
Daughter taxa (blue => in age window 0-300Ma) Granddaughter taxa

Test trochospiral with umbilical-extraumbilical aperture with a prominent lip. Apertures of earlier formed chambers remain visible around the umbilicus.


Citation: smooth non-spinose
Rank: informal group

Catalog entries:

Type images:

NB The short diagnoses are used in the tables of daughter-taxa to act as quick summaries of the differences between e.g. species of one genus. They have initially been copied from the diagnostic characters/distinguishing features sections of the Eocene and Paleocene Atlases, they will be edited as the site is developed.


Biogeography and Palaeobiology

Biostratigraphic distribution

Geological Range:
Last occurrence (top): within Rupelian Stage (28.09-33.89Ma, top in Rupelian stage). Data source: Total of range of species in this database
First occurrence (base): within Maastrichtian Stage (66.04-72.05Ma, base in Maastrichtian stage). Data source: Total of range of species in this database

Plot of occurrence data:


smooth non-spinose compiled by the pforams@mikrotax project team viewed: 28-4-2017

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