Nannotax3 - ntax_cenozoic - Discosphaera Nannotax3 - ntax_cenozoic - Discosphaera

Discosphaera


Classification: ntax_cenozoic -> Syracosphaerales -> Rhabdosphaeraceae -> Discosphaera
Sister taxa: Acanthoica, Algirosphaera, Blackites, Cyrtosphaera, Discosphaera, Palusphaera, Rhabdosphaera, Solisphaera

Daughter taxa (time control age-window is: 0-800Ma)
Discosphaera jerkovici
Trumpet width similar to basal width
Discosphaera tubifera
Trumpet width much greater than basal width.
Discosphaera sp.
Specimens which cannot be assigned to established species

Taxonomy:

Citation: Discosphaera Haeckel, 1894
taxonomic rank: Genus
Type species: Discosphaera thomsonii Ostenfeld 1899 (j. syn ofD. tubifera).

Distinguishing features:
Parent taxon (Rhabdosphaeraceae): BCs planoliths with radial lath cycle and highly-variable axial structures. Often polymorphic and/or varimorphic
This taxon: Body coccoliths with well-developed radial lath cycle; trumpet-like process; coccospheres monomorphic

Farinacci & Howe catalog pages: Discosphaera *


Morphology:

Coccosphere: Monomorphic, non-motile.
Coccoliths: With large trumpet-like (salpingiform) spines. Coccolith bases are broadly elliptical, with normal rhabdosphaeraceae-type rim, radial and lamellar cycles. Spine circular in cross section, weakly attached to base above narrow pore in centre of the base, by organic (?) thread.

Search data:
LITHS: planolith, elliptical, CA: ca_disjunct, grill, process,
CSPH: equant, monomorphic, CROSS-POLARS: V-prominent, R-prominent,
Lith size: 2->8µm; Coccosphere size: 12->20µm;
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 ranges of the species in this database
First occurrence (base): within Middle Miocene Sub-Epoch (11.62-15.97Ma, base in Langhian stage). Data source: Total of ranges of species in this database

Plot of occurrence data:

References:

Haeckel, E. (1894). Systematische Phylogenie der Protisten und Pflanzen. Reimer, Berlin. -. gs


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Discosphaera compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 26-5-2024

Taxon Search:
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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=518 Go to Archive.is to create a permanent copy of this page - citation notes
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