Plummerita kennerleyi

Taxonomy

Original description: Diagnosis: A moderately inflated species of Plummerita with 4-5 chambers in the final whorl. Tubulospines developed only in last three chambers, paired. one at each angle of the periphery and oblique to the plane of coiling. Ornament of meridionally arra nged ridges strongly developed.

Description: Test a low trochospire consisting of about two whorls. Outline in spiral and umbilical views lobulate then tubulospinate; five chambers in final whorl, subglobular at first, gradually increasing in size, with last two chambers each produced into two tubulospines at opposite angles to the mid-line of the periphery. Lower periphery rounded in edge view, upper margin tubulospinose. Sutures moderatelly depressed, curved. Wall calcareous, finely perforate, test surface ornamented by strong, meridionally arranged ridges which extend to the tubulospines. Umbilicus shallow, aperture appears to be an interiomarginal, umbilical-extraumbilical arch; tegillum not preserved.

Entries in the Catalog of original descriptions: Plummerita kennerleyi

Geological Range:
Last occurrence (top): within A. mayaroensis zone (67.64-69.27Ma, top in Maastrichtian stage). Data source: [copied from Chronos database]
First occurrence (base): within A. mayaroensis zone (67.64-69.27Ma, base in Maastrichtian stage). Data source: [copied from Chronos database]

Plot of range and occurrence data:

• Range-bar - range as quoted above, pink interval top occurs in, green interval base occurs in.
• Triangles indicate an event for which a precise placement has been suggested
• (NB There is no histogram as there are no occurrence records for the taxon in the Neptune database) Parent: Plummerita

Plummerita kennerleyi compiled by the pforams@mikrotax project team viewed: 13-2-2025 Taxon Search: Advanced Search Short stable page link: https://mikrotax.org/dinotax/index.php?id=110422 Go to Archive.is to create a permanent copy of this page - citation notes

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