Lophodolithus rotundus


Classification: Coccolithophores -> Zygodiscales -> Zygodiscaceae -> Lophodolithus -> Lophodolithus rotundus
Sister taxa: L. acutus, L. luntii, L. mochlophorus, L. mytiliformis, L. nascens, L. reniformis, L. rotundus, L. sp.,

Taxonomy:

Citation: Lophodolithus rotundus Bukry & Percival, 1971
Rank: Species

Distinguishing features: Large to very large, broadly elliptical to subcircular Lophodolithus with a very broad (~half the length of the rim), near-symmetric wing at one end. No central area structures observed. Wing elements clearly visible in LM.

Farinacci & Howe catalog pages: Lophodolithus rotundus *

Search data:
TagsLITHS: murolith, asymmetric, elliptical, RIM: flange-distal, rim-high, outer wall acw-imbricate, wing, CA: bar-transverse,
CSPH: not known, V-UNITS: outer-rim, R-UNITS: c-str, inner-rim, DETAILS: ca_disjunct, rim-bicyclic,
MetricsLith size: 10->23µm;
Sources: lith size from OD & illustrated specimens
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): within NP15 zone (42.87-46.29Ma, top in Lutetian stage). Data source: Perch-Nielsen 1985b
First occurrence (base): within NP15 zone (42.87-46.29Ma, base in Lutetian stage). Data source: Perch-Nielsen 1985

Plot of occurrence data:

  • Histogram - Neptune occurrence data from DSDP and ODP proceedings. Pale shading <50 samples in time bin. Interpret with caution & read these notes
  • Note to users in China - the diagram may not plot unless you use a VPN since I use google services on the website. If this is a problem please contact me 谢谢.
  • Taxon plotted: Lophodolithus rotundus, synonyms included - Lophodolithus rotundus;
  • space-time plot :: Samples map :: Parent: Lophodolithus

    References:

    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

    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

    Bukry, D. & Percival, S. F. (1971). New Tertiary calcareous nannofossils. Tulane Studies in Geology and Paleontology. 8: 123-146. gs

    Perch-Nielsen, K. (1977). 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

    Perch-Nielsen, K. (1985a). Cenozoic calcareous nannofossils. In, Bolli, H. M. , Saunders, J. B. & Perch-Nielsen, K. (eds) Plankton Stratigraphy. Cambridge University Press, Cambridge 427-555. gs

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    Lophodolithus rotundus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 22-1-2020

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    Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=836 Go to Archive.is to create a permanent copy of this page - citation notes
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