pforams@mikrotax - Dicarinella pforams@mikrotax - Dicarinella

Dicarinella


Classification: pf_mesozoic -> Globotruncanidae -> Dicarinella
Sister taxa: Abathomphalus, Contusotruncana, Dicarinella, Gansserina, Globotruncana, Globotruncanella, Globotruncanita, Loeblichella, Marginotruncana, Radotruncana
Daughter taxa (time control age-window is: 0-800Ma)
Dicarinella asymetrica

Dicarinella canaliculata

Dicarinella concavata

Dicarinella hagni

Dicarinella imbricata

Dicarinella marianosi

Dicarinella primitiva

Dicarinella roddai

bouldinensis group
Dicarinella bouldinensis

Dicarinella longoriai

Dicarinella takayanagii

Dicarinella sp.
Specimens which cannot be assigned to established species

Taxonomy

Citation: Dicarinella Porthault, in Donze et al. 1970
taxonomic rank: Genus
Type species: Globotruncana indica Jacob & Sastry 1950

Original description: Définition. - Test calcaire perforé, bilamellaire, à enroulement trocho - spiralé . Ouverture primaire intériomarginale , ombilicale-extraombilicale. Handeau carénal périphérique imperforé comportant deux carènes visible au moins sur certaines loges du dernier tour. Sur la face dorsale, les sutures sont plus ou moins obliques, déprimées ou en relief et bordées par un bourrelet; sur la face ventraie, elles sont toujours radiales et déprimées.

Des expansions lamelleuses issues de la portion adombilicale des loges ('portici') forment une couronne autour de la cavité ombilicale, qu'elles recouvrent plus ou moins complètement en ménageant entre elles des 'ouvertures accessoires' infralaminales. Il n'existe pas d'ouvertures supplèmentaires suturales.

Entries in the Catalog of original descriptions: Dicarinella

Geological Range:
Last occurrence (top): at top of D. asymetrica zone (100% up, 83.7Ma, in Santonian stage). Data source: Total of ranges of the species in this database
First occurrence (base): within Cenomanian Stage (93.90-100.50Ma, base in Cenomanian stage). Data source: Total of ranges of species in this database

Plot of range and occurrence data:

References:

Donze, P., Porthalult, B., Thomel, G. & de Villoutryeys, O. (1970). Le Senonien inferieur de Puget-Theniers (Alpes-Maritimes) et sa microfaune. Geobios. 3(2): 41-106. gs

Jacob, K. & Sastry, M. V. A. (1950). On the occurrence of Globotruncana in Uttattur stage of the Trichinopoly Cretaceous, south India. Science and Culture. 16(6): +267-+. gs


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Dicarinella compiled by the pforams@mikrotax project team viewed: 16-7-2024

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Short stable page link: https://mikrotax.org/pforams/index.php?id=110083 Go to Archive.is to create a permanent copy of this page - citation notes



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Comments (4)

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Pere Miralles(Spain)

Hello,

In the Dicarinella, the range chart indicates occurences of Dicarinella takayanagii in Cenomanian-Turonian limit... while the chart with the other Dicarinellas indicates all Cenomanian zone. Could you fix it?

Thanks for this web page... a greatest tool ever for FP!

Best regards

Avatar
Jeremy Young

Thank you for pointing that out. There is evidently a program bug causing that problem, and it affects all the generic charts. I will fix it, but it may take a couple of days

Jeremy

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Jeremy Young

It is fixed now, thank you again for pointing it out Jeremy

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Pere Miralles

Thank hou Jeremy, awesome work!