pforams@mikrotax - Dicarinella longoriai

Dicarinella longoriai


Classification: pf_mesozoic -> Globotruncanidae -> Dicarinella -> Dicarinella longoriai
Sister taxa: D. asymetrica, D. canaliculata, D. concavata, D. hagni, D. imbricata, D. marianosi, D. primitiva, D. roddai ⟩⟨ D. bouldinensis, D. longoriai, D. takayanagii, D. sp.

Taxonomy

Citation: Dicarinella longoriai Peryt 1980
Rank: Species
Basionym: Dicarinella longoriai

Type images:

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 (92.56-93.52Ma, top in Turonian stage). Data source: #N/A
First occurrence (base): within H. helvetica zone (92.56-93.52Ma, base in Turonian stage). Data source: [copied from Chronos database]

Plot of range and occurrence data:

Character matrix
test outline:Lobatechamber arrangement:Trochospiraledge view:aperture:Umbilical-extraumbilical
sp chamber shape:Petaloidcoiling axis:Lowperiphery:Single keelaperture border:
umb chbr shape:umbilicus:periph margin shape:accessory apertures:
spiral sutures:umb depth:wall texture:shell porosity:
umbilical or test sutures:Weakly depressedfinal-whorl chambers:4.0-4.5 N.B. These characters are used for advanced search. N/A - not applicable

References:

Peryt, D. (1980). Planktic foraminifera zonation of the Upper Cretaceous in the middle Vistula River valley, Poland. Palaeontologia Polonica. 41: 1-123. gs


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Dicarinella longoriai compiled by the pforams@mikrotax project team viewed: 20-9-2021

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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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Meysam (Mashhad, Iran)

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

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