Futyania petalosa

Classification: Coccolithophores -> Isochrysidales -> Prinsiaceae -> Futyania -> Futyania petalosa
Sister taxa: F. petalosa, F. sp.,


Citation: Futyania petalosa (Ellis and Lohmann, 1973) Varol, 1989
Rank: Species
Basionym: Toweius petalosus Ellis and Lohmann, 1973
Variants: Futyania attewellii Varol 1989 - circular and with smaller central area
Notes & discussion: Often seen in side view in light microscope and as complete coccospheres.

Distinguishing features: Small circular to elliptical placoliths with narrow central area and tube-elements extended distally to form a flower-like distal structure.

Farinacci & Howe catalog pages: Toweius petalosus * , Futyania attewellii *

Morphology remarks: Easily overlooked since loose coccoliths are very small and coccospheres resemble calcareous dinoflagellates but they are very distinctive once they have been observed

Search data:
TagsLITHS: placolith, circular, CA: Placoliths: closed-----, process, closed, PROCESS: broad, length-slow, low, spine,
CSPH: spherical, equant, monomorphic, V-UNITS: distal shield, prox shield, V-prominent, R-UNITS: c-str, spine, R-prominent, DETAILS: ca_conjunct,
MetricsLith size: 1->2µm; Liths per sphere: 40->80
Sources: OD and illustrated specimens
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): in upper part of NP2 zone (60% up, 65.1Ma, in Danian stage). Data source: Varol, 1989, fig. 12.4
First occurrence (base): in mid part of NP1 zone (50% up, 65.8Ma, in Danian stage). Data source: Varol, 1989, fig. 12.4

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: Futyania petalosa, synonyms included - Futyania attewellii; Futyania petalosa; Prinsius petalosus; Toweius petalosus;
  • space-time plot :: Samples map :: Parent: Futyania


    Burnett, J. A. (1998). Upper Cretaceous. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series. 132-199. gs

    Ellis, C. H. & Lohmann, W. H. (1973). Toweius petalosus new species, a Paleocene calcareous nannofossil from Alabama. Tulane Studies in Geology and Paleontology. 10: 107-110. gs

    Mai, H. (2001). New coccolithophorid taxa fom the Guelhemmerberg airshaft. Lower Paleocene, The Netherlands. Micropaleontology. 47: 144-154. gs

    Mai, H., Hillebrandt-Habel, T., von Salis Perch-Nielsen, K. & Willems, H. (1998). Paleocene coccospheres from DSDP Leg 39, Site 356, Sao Paulo Plateau, S. Atlantic Ocean. Journal of Nannoplankton Research. 20(1): 21-29. gs

    Varol, O. (1989c). Palaeocene calcareous nannofossil biostratigraphy. In, Crux, J. A. & van Heck, S. E. (eds) Nannofossils and their applications. Ellis Horwood, Chichester 265-310. gs


    Futyania petalosa compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 7-4-2020

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    Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=599 Go to Archive.is to create a permanent copy of this page - citation notes

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