Dicarinella longoriai

Taxonomy

Original description: Diagnosis: Test low trochospiral, slightly convex on spiral side, slightly concave on umbilical side; periphery lobate; chambers petaloid on spiral side, sectorial on umbilical side; final whorl consisting of 4'/.-5 whorls; spiral sutures depressed; umbilical sutures radial, depressed

Description: Test trochospiral, slightly convex spiral side. flat or even slightly concave umbilical side. consisting of 2 whorls: periphery strongly lobate, truncated by distinct, closely spaced double keel; chambers petaloid, slightly inflated on spiral side; trapezoidal, flattened to weakly inflated on umbilical side; final whorl consisting of 4 1/ 2 chambers increasing sharply as added; spiral sutures curved, depressed in peripheral part, raised by keel coinciding with sutures in internal part; umbilical sutures radial, depressed; wall finely papillate; umbilicus narrow, rather deep; primary aperture extra umbilical-umbilical; portici with infralaminal accessory apertures.

Entries in the Catalog of original descriptions: Dicarinella longoriai

Geological Range:
Last occurrence (top): within H. helvetica zone (92.51-93.52Ma, top in Turonian stage). Data source: #N/A
First occurrence (base): within H. helvetica zone (92.51-93.52Ma, base in Turonian 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: Dicarinella

Dicarinella longoriai compiled by the pforams@mikrotax project team viewed: 13-5-2025 Taxon Search: Advanced Search Short stable page link: https://mikrotax.org/pforams/index.php?id=110092 Go to Archive.is to create a permanent copy of this page - citation notes

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Comments (1)

 

 

 

 

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Meysam

Posts: 1

Since: Jun 2020

Meysam(Guyana)

Hi what differences between mentioned species with other Dicarinella species. Please explain for me. Thanks a lot

23 June 2020 12:29

 

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