Nannotax3 - Coccolithophores - Futyania petalosa

Futyania petalosa

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

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

Mai2001pl6-4.JPG
JRYCD-FutyaniaA.JPG
JRYCD-FutyaniaA1.JPG
Burnett1998-6-15-16ab.jpg
Burnett1998-6-15-18.jpg
Burnett1998-6-15-19.jpg
Burnett1998-6-15-22.jpg
Burnett1998-6-15-23.jpg
JRYCD-FutyaniaA2.JPG
JRYCD-FutyaniaB.JPG
JRYCD-FutyaniaC.JPG
JRYSEM-195-23.JPG
JRYSEM-195-25.JPG
JRYSEM-195-71.JPG
Mai1998pl3-01.JPG
Mai1998pl3-02.JPG
Mai1998pl3-03.JPG
Mai2001pl6-3.JPG

Taxonomy:

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.

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

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

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:

Tags	LITHS: placolith, circular, CA: Placoliths: closed, PROCESS: broad, length-slow, low, spine, CSPH: spherical, BC+process, BC-dimorphic, monomorphic, polymorphic, V-UNITS: distal shield, prox shield, R-UNITS: c-str, spine, DETAILS: ca_conjunct,
Metrics	Lith 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:

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
Histogram - Neptune occurrence data from DSDP and ODP proceedings. Interpret with caution & read these notes
Taxon plotted: Futyania petalosa, synonyms included - Futyania attewellii; Futyania petalosa; Prinsius petalosus; Toweius petalosus; space-time plot :: Samples map :: Parent: Futyania

References:

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.

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