flat dimorphic

Classification: ntax_cenozoic -> Holococcoliths -> tubeless -> flat dimorphic
Sister taxa: Sphaerocalyptra, Anthosphaera, fried egg monomorphic, flat dimorphic, flat (coccolithaceae HOLs), flat trapezoidal, tubeless-minute

Daughter taxa (time control age-window is: 0-800Ma)
Syracosphaera nana HOL
BCs disk with double layer of irregularly arranged crystallites; CFCs with transverse ridge
Syracosphaera strigilis HOL
BCs solid disk with transverse ridge; CFCs with elevated transverse bridge


Citation: flat dimorphic Young et al., 2003
Rank: species group

Distinguishing features: BCs disks, may have ridge
CFCs with transverse ridge of bridge

Farinacci & Howe catalog pages: flat dimorphic [no catalog entry yet]

Search data:
MetricsLith size: 0.8->1.5µm;
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: Total of range of species in this database
First occurrence (base): at top of No known fossil record modern (100% up, 0Ma, in "Holocene" stage). Data source: Total of range of species in this database

Plot of occurrence data:


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


flat dimorphic compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 20-4-2021

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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=580 Go to Archive.is to create a permanent copy of this page - citation notes

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