Dicarinella longoriai

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


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

Type images:

Original description: Dicarinella longoriai Peryt 1980: 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 occurrence data:

Dec 2017 - Plotting of Neptune data has been re-enabled on the Mesozoic pages following revision of the age-models in Neptune. The data is, however, still very sparse for the Early Cretaceous

Character matrix

test outline:Lobatechamber arrangement:Trochospiraledge view:aperture:Umb.-extraumbilical
umb chamber shape:coiling axis:Lowperiphery:Single keelaperture border:
sp chbr shape:Petaloidumbilicus:periph margin shape:accessory apertures:
umbilical or test sutures:Weakly depressedumb depth:wall texture:shell porosity:
spiral sutures:diameter mm:0.37width mm:0.29breadth mm:0.16
final-whorl chambers:4.0-4.5


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


Dicarinella longoriai compiled by the pforams@mikrotax project team viewed: 22-2-2018

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