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Dicarinella


Classification: pf_mesozoic -> Globotruncanidae -> Dicarinella
Sister taxa: Abathomphalus, Contusotruncana, Dicarinella, Gansserina, Globotruncana, Globotruncanella, Globotruncanita, Loeblichella, Marginotruncana, Radotruncana,
Daughter taxa: (blue => in age window 0-800Ma)











Specimens which cannot be assigned to established species

Taxonomy

Citation: Dicarinella Porthault 1970
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): within Santonian Stage (83.64-86.26Ma, top in Santonian stage). Data source: Total of range of species in this database
First occurrence (base): within Cenomanian Stage (93.90-100.50Ma, base in Cenomanian stage). Data source: Total of range of species in this 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

References:

Porthault, B. , in Donze, P. , Porthault, B. , Thomel, G. , Villoutreys, O. de (1970). Le Sénonien inférieur de Puget-Théniers (Alpes-Maritimes) et sa microfaune. Geobios. 3(2): 41-106. gs


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Dicarinella compiled by the pforams@mikrotax project team viewed: 1-10-2020

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Short stable page link: http://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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