Distinguishing features:
Parent taxon (Rhagodiscaceae): Eiffelithales with V-units forming most of rim (R-units typically thin plates on proximal surface, so LM images are typically unicyclic. Central-areas typically filled by a plate of granular calcite. The central structure may be spine-bearing, perforate or massive.
This taxon: Solid, truncated-cone-shaped coccolith (possibly a holococcolith), with distinct outer rim and banded core.
Daughter taxa (time control age-window is: 0-800Ma) | ||||
Zebrashapka vanhintei Solid, truncated-cone-shaped coccolith (possibly a holococcolith), with distinct outer rim and banded core. | ||||
Zebrashapka sp. Specimens not identified to species level |
Taxonomy:
Farinacci & Howe catalog pages: Zebrashapka *
Distinguishing features:
Parent taxon (Rhagodiscaceae): Eiffelithales with V-units forming most of rim (R-units typically thin plates on proximal surface, so LM images are typically unicyclic. Central-areas typically filled by a plate of granular calcite. The central structure may be spine-bearing, perforate or massive.
This taxon: Solid, truncated-cone-shaped coccolith (possibly a holococcolith), with distinct outer rim and banded core.
Search data:
LITHS: murolith, nannolith-radiate, elliptical, cylindrical, CA: closed, process, CROSS-POLARS: rim-unicyclic, |
Lith size: 4->7µm; Data source notes: size range of included species |
Geological Range:
Last occurrence (top): at top of Early Aptian Substage (100% up, 118.7Ma, in Aptian stage). Data source: Total of ranges of the species in this database
First occurrence (base): within Late Hauterivian Substage (126.50-130.60Ma, base in Hauterivian stage). Data source: Total of ranges of species in this database
Plot of occurrence data:
Zebrashapka compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 14-12-2024
Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=11316 Go to Archive.is to create a permanent copy of this page - citation notes |
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