Orthopithonella


Classification: non_cocco -> Dinophytes -> Thoracosphaeraceae -> Radial wall -> Orthopithonella
Sister taxa: Bitorus, Caracomia, Congruentia, Echinodinella, Leonella, Orthopithonella, Orthotabulata, Ruegenia,

Daughter taxa: (blue => in age window 0-800Ma)




















Taxonomy:

Citation: Orthopithonella Keupp, in Keupp & Mutterlose 1984
Rank: Genus
Type species: Orthopithonella gustafsonii (Bolli) Lentin & Williams 1984

Catalog entries: Orthopithonella *


Morphology remarks: Original description of Keupp & Mutterlose: Zysten mit überwiegend einfachen Kalkwänden, die aus blockigen bis stengeligen Kalzit-Kristallen streng mit radialer Anordnung (c-Achse normal zur Oberfläche) aufgebaut sind. Im allgemeinen ohne Paratabulation Hierzu gehören die unterkretazischen Artengruppen: Pithonella gustafsoni BOLLI 1974 (vgl. KEUPP 1981:20), Pithonella porata KEUPP 1982 (vgl. KEUPP 1981: 20-26).

English translation: Cysts with predominantly simple calcareous walls, constructed of columnar to blocky calcite crystals with strictly radial orientation (c-axis normal to the surface). In general without paratabulation. These include the Lower Cretaceous species groups: Pithonella gustafsoni BOLLI 1974 (cf. KEUPP 1981:20), Pithonella porata KEUPP 1982 (cf. KEUPP 1981: 20-26).

Geological Range:
Last occurrence (top): within Messinian Stage (5.33-7.25Ma, top in Messinian stage). Data source: Total of range of species in this database
First occurrence (base): within Carnian Stage (228.35-237.00Ma, base in Carnian stage). Data source: Total of range of species in this database

References:

Keupp, H. & Mutterlose, J. (1984). Organismen-Verteilung in den D-Beds von Speeton (Unterkreide, England) unter besonderer Berücksichtigung der kalkigen Dinoflagellaten-Zysten. Facies. 10: 153-178. gs


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Orthopithonella compiled by Jeremy R. Young viewed: 28-3-2020

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Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=20234 Go to Archive.is to create a permanent copy of this page - citation notes



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