nmn

Dicarinella longoriai


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

Taxonomy

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 (-Ma, top in "Holocene" 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:

NB Plotting of Neptune data has been disabled on the Mesozoic pages because the dataset is both small and badly affected by a few sites with erroneous age models (our obs Huber, Petrizzo, Young, Nov 2016). The data can still be viewed via the range plottertool - tools menu.

Character matrix

test outline:Lobatecoiling axis:Lowchamber arrangement:Trochospiralumbilicus:
edge view:umbilical or test sutures:Weakly depressedspiral sutures:shell porosity:
wall texture:aperture:Umb.-extraumbilicalaperture border:accessory apertures:
periphery:Single keelumb chamber shape:sp chbr shape:Petaloidperiph margin shape:
umb depth:diameter mm:0.37width mm:0.29breadth mm:0.16
final-whorl chambers:4.0-4.5

References:

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: 29-5-2017

Taxon Search:
Advanced Search



AphiaID: 909716 Nomenclatural data on WoRMS

Comments (0)

No comments yet. Be the first!

Add Comment

* Required information
1000
Captcha Image
Powered by Commentics