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
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:
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-+. gsReferences:
Dicarinella compiled by the pforams@mikrotax project team viewed: 5-11-2024
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)
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
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
It is fixed now, thank you again for pointing it out Jeremy
Thank hou Jeremy, awesome work!