Pontosphaera multipora


Classification: ntax_cenozoic -> Zygodiscales -> Pontosphaeraceae -> Pontosphaera -> Pontosphaera multipora
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 ⟩⟨> >>

Taxonomy:

Citation: Pontosphaera multipora (Kamptner, 1948 ex Deflandre in Deflandre & Fert, 1954) Roth, 1970
Rank: Species
Basionym: Discolithus multiporus Kamptner, 1948 ex Deflandre, 1954
Synonyms: P. multipora is both a rather generalised morphotype - moderately developed rim, largish holes -and highly variable in coccolith morphology even on single coccospheres. So, it is unusually difficult to set the limits of the species and numerous similar species have been described.
Straightforward synonyms, from Miocene or younger:
Kamptner 1967 described several Discolithus species from a single Challenger dredging, all these fall broadly within the variation shown by modern P. multipora [JRY 2015]: Possible Paleogene synonyms
Variants: Coccolithites anisotrema Kamptner (1955) = Pontosphaera anisotrema (Kamptner 1956) Backman 1980 - outer cycle of large holes, several inner cycles of small holes
Taxonomic discussion: The coccoliths of P. multipora show considerable variation in number of pores and rim width even on single coccospheres.

Distinguishing features: Rim elevated, 3 or more cycles of large (0.3-0.5 µm) pores.

Farinacci & Howe catalog pages: D. multiporus * , P. multipora * , C. anisotrema * , P. turgida [no catalog entry yet], D. vigintiforatus * , D. sparsiforatus * , D. lineatus * , P. indooceanica * , P. cribrosa * , P. grani * , D. apocresis * , D. forenus * , D. giresus * , D. raclus * , D. radolensis * , D. redogenus * , D. rorsus * , D. confossa * , D. cribraria * , D. desueta * , D. distinctoides * , D. vescus * , P. rigida * , P. bukryi *


Morphology: Pores in outermost cycle usually elongated radially, inner cycles rather irregular; rim highly variable in width and may obscure outer pores

Search data:
TagsLITHS: murolith, elliptical, CA: ca_conjunct, pores,
CSPH: equant, monomorphic, CROSS-POLARS: rim-bicyclic, V-prominent, R-prominent,
MetricsLith size: 5->10µm; Coccosphere size: 15->25µm;
Data source notes: lith & csph size from illustrated specimens
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): Extant Data source: present in the plankton (Young et al. 2003)
First occurrence (base): within Eocene Epoch (33.89-55.96Ma, base in Ypresian stage). Data source: [JRY rough estimate]

Plot of occurrence data:

References:

Aubry, M-P. (1986a). Palaeogene calcareous nannofossil biostratigraphy of northwestern Europe. Palaeogeography Palaeoclimatology Palaeoecology. 55: 267-334. gs

Backman, J. (1980). Miocene-Pliocene nannofossils and sedimentation rates in the Hatton-Rockall Basin, NE Atlantic Ocean. Stockholm Contributions in Geology. 36: 1-91. gs

Bown, P. R. & Newsam, C. (2017). Calcareous nannofossils from the Eocene North Atlantic Ocean (IODP Expedition 342 Sites U1403–1411). Journal of Nannoplankton Research. 37(1): 25-60. gs V O

Bown, P. R. (2005d). Palaeogene calcareous nannofossils from the Kilwa and Lindi areas of coastal Tanzania (Tanzania Drilling Project 2003-4). Journal of Nannoplankton Research. 27(1): 21-95. gs V O

Bybell, L. (1975). Middle Eocene calcareous nannofossils at Little Stave Creek, Alabama. Tulane Studies in Geology and Paleontology. 11(4): 177-247. gs V O

Cepek, P. (1973a). Die Art Pontosphaera indooceanica n. sp. und ihre Bedeutung für die Stratigraphie der jungsten Sedimente des Indischen Ozeans. “Meteor” Forschungsergebnisse, Reihe C, Geologie und Geophysik. 12: 1-8. 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

Deflandre, G. & Fert, C. (1954). Observations sur les coccolithophoridés actuels et fossiles en microscopie ordinaire et électronique. Annales de Paléontologie. 40: 115-176. gs

Dunkley Jones, T., Bown, P. R. & Pearson, P. (2009). Exceptionally well preserved upper Eocene to lower Oligocene calcareous nannofossils (Prymnesiophycidae) from the Pande Formation (Kilwa Group), Tanzania. Journal of Systematic Palaeontology. 7(4): 359-411. gs

Gaarder, K. R. (1954). Coccolithineae, Silicoflagellatae, Pterospermataceae and other forms from the Michael Sars North Atlantic Deep Sea Expedition 1910. Report on the Scientific Results of the ‘‘Michael Sars'' North Atlantic Deep Sea Expedition 1910. 2: 1-20. gs

Haq, B. U. (1971). Paleogene calcareous nannoflora. Parts I-IV. Stockholm Contributions in Geology. 25: 1-158. gs

Hay, W. W., Mohler, H. P. & Wade, M. E. (1966). Calcareous nannofossils from Nal'chik (northwest Caucasus). Eclogae Geologicae Helvetiae. 59: 379-399. gs V O

Jones, A. P. & Dunkley Jones, T. (2020). Middle Eocene to Early Oligocene calcareous nannofossils from the Nanggulan Formation, Java, Indonesia. Journal of Nannoplankton Research. 30(1): 57-79. gs V O

Kamptner, E. (1948). Coccolithen aus dem Torton des Inneralpinen Wiener Beckens. Anzeiger der Österreichische Akademie der Wissenschaften, Mathematische-Naturwissenschafliche Klasse, Wien. 157: 1-16. gs V O

Kamptner, E. (1956c). Zur Systematik und Nomenklatur der Coccolithineen. Anzeiger der Österreichische Akademie der Wissenschaften, Mathematische-Naturwissenschafliche Klasse, Wien. 93: 4-11. gs

Kamptner, E. (1967). Kalkflagellaten - Skelettreste aus Tiefseeschlamm des Südatlantischen Ozeans. Annalen des Naturhistorischen Museums in Wien. 71: 117-198. gs V O

Müller, C. (1970b). Nannoplankton-Zonen der Unteren-Meeresmolasse Bayerns. Geologica Bavarica. 63: 107-118. gs V O

Müller, C., Blanc Vernet, L., Chamley, H. & Froget, C. (1974). Les coccolithophorides d’une carotte Méditerranéenne. Comparaison paléoclimatologique avec les foraminifères, les ptéropodes et les argiles. Tethys. 6(4): 805-828. gs

Perch-Nielsen, K. (1967b). Nannofossilien aus dem Eozan von Danemark. Eclogae Geologicae Helvetiae. 60: 19-32. gs V O

Perch-Nielsen, K. (1971c). Elektronenmikroskopische untersuchungen an Coccolithen und verwandten Formen aus dem Eozan von Danemark. Biologiske Skrifter, Kongelige Danske Videnskabernes Selskab. 18(3): 1-76. gs

Perch-Nielsen, K. (1977a). Albian to Pleistocene calcareous nannofossils from the Western South Atlantic, DSDP Leg 39. Initial Reports of the Deep Sea Drilling Project. 39: 699-823. gs V O

Perch-Nielsen, K. (1984b). Validation of new combinations. INA Newsletter. 6(1): 42-46. gs V O

Reinhardt, P. (1967). Fossile Coccolithen mit rhagoidem Zentralfeld (Fam. Ahmuellerellaceae, Subord. Coccolithineae). Neues Jahrbuch für Geologie und Paläontologie, Monatshefte. 1967: 163-178. gs

Roth, P. H. (1970). Oligocene calcareous nannoplankton biostratigraphy. Eclogae Geologicae Helvetiae. 63: 799-881. gs V O

Self-Trail, J. (2011). Paleogene Calcareous Nannofossils of the South Dover Bridge core, Southern Maryland (USA). Journal of Nannoplankton Research. 32(1): 1-28. gs V O

Sullivan, F. R. (1965). Lower Tertiary nannoplankton from the California Coast Ranges. II. Eocene. University of California Publications in Geological Sciences. 53: 1-74. gs

Varol, O. (1989a). Calcareous nannofossil study of the central and western Solomon Islands. Circum-Pacific Council for Energy and Mineral Resources Earth Sciences. 239-268. gs V O

Wise, S. W. (1983). Mesozoic and Cenozoic calcareous nannofossils recovered by DSDP Leg 71 in the Falkland Plateau region, Southwest Atlantic Ocean. Initial Reports of the Deep Sea Drilling Project. 71: 481-550. gs V O

Young, J. R. (1998). Neogene. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series. 225-265. gs V O

Young, J. R., Geisen, M., Cros, L., Kleijne, A., Probert, I. & Ostergaard, J. B. (2003). A guide to extant coccolithophore taxonomy. Journal of Nannoplankton Research, Special Issue. 1: 1-132. gs V O


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Pontosphaera multipora compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 21-4-2021

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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=1082 Go to Archive.is to create a permanent copy of this page - citation notes



Comments (1)

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Mike Styzen (Noble Energy, US)
I have seen a top for this species reported at around the base of NN 16. Is this based on the range of some sort of variant?
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Jeremy Young (NHM, UK)
good question - the name P. multipora seems to be used very broadly and I can well imagine that there are different forms with restricted ranges. In terms of taxonomy since Kamptner's type was from the Late Miocene there is no guarantee that the modern species is the same thing
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