Nannotax3 - ntax_cenozoic - Pontosphaera longiforaminis

Pontosphaera longiforaminis

Classification: ntax_cenozoic -> Zygodiscales -> Pontosphaeraceae -> Pontosphaera -> Pontosphaera longiforaminis
Sister taxa: P. multipora, P. discopora, P. distincta, P. enormis, P. desuetoidea, P. geminipora, P. longiforaminis, P. megapachydisca, P. veta ⟩⟨ P. syracusana, P. alta, P. panarium, P. versa, P. wallacei, P. latoculata, P. sp.A ⟩⟨ P. formosa, P. wechesensis, P. fimbriata, P. brinkhuisii, P. hollisii, P. romansii ⟩⟨> >>

JRYSEM-268-42.JPG
JRYSEM-268-56_NAC-II-4-2.JPG
Muller74walb-pl3-24.JPG
PN72 pl21-01.JPG
deKaenelVilla96pl12 f01.JPG
deKaenelVilla96pl12 f02-3.JPG
deKaenelVilla96pl12 f04.JPG

Taxonomy:

Citation: Pontosphaera longiforaminis (Baldi-Beke 1964) de Kaenel & Villa 1996

Rank: Species

Basionym: Discolithus longiforaminis Baldi-Beke 1964

Taxonomic discussion: In SEM this is a distinctive morphotpye and it seems to be characterisitc of the Early Miocene. The name Pontosphaera longiforaminis was applied in this sense by de Kaenel & Villa (1996) and this usage is followed here although it is less clear if the holotype of Baldi-Beke exactly correspnods. [JRY 2017]

Distinguishing features: Pontosphaera with central rea protruding above rim, marginal cycle of elongates pores and more irregular central part.

Farinacci & Howe catalog pages: D. longiforaminis *

Search data:

Tags	LITHS: murolith, elliptical, CA: ca_conjunct, pores, CROSS-POLARS: rim-bicyclic, V-prominent, R-prominent,
Metrics	Lith size: 0->0µm;

The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): within Middle Miocene Sub-Epoch (11.62-15.97Ma, top in Serravallian stage). Data source: range of specimens illustrated here
First occurrence (base): within Early Miocene Sub-Epoch (15.97-23.03Ma, base in Aquitanian stage). Data source: range of specimens illustrated here

Plot of occurrence data:

Range-bar - range as quoted above, pink interval top occurs in, green interval base occurs in.
Triangles indicate an event for which a precise placement has been suggested
(NB There is no histogram as there are no occurrence records for the taxon in the Neptune database) Parent: Pontosphaera

References:

Baldi-Beke, M. (1964). Untersuchungen an Coccolithophoriden aus dem Miozan des Mecsek-Gebirges. Magyar Allami Földtani Intezet Evi Jelentese. 1961(1): 161-173. gs

de Kaenel, E. & Villa, G. (1996). Oligocene-Miocene calcareous nannofossil biostratigraphy and paleoeecology from the Iberian Abyssal Plain. Proceedings of the Ocean Drilling Program, Scientific Results. 149: 79-145. gs V O

Müller, C. (1974c). Nannoplankton aus dem Mittel-Miozän von Walbersdorf (Burgenland). Senckenbergiana Lethaea. 55: 389-405. gs

Perch-Nielsen, K. (1972b). Remarks on Late Cretaceous to Pleistocene coccoliths from the North Atlantic. Initial Reports of the Deep Sea Drilling Project. 12: 1003-1069. gs V O

Pontosphaera longiforaminis compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 28-1-2021

Taxon Search:

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Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=1080 Go to Archive.is to create a permanent copy of this page - citation notes

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