Nannotax3 - ntax_cenozoic - Algirosphaera cucullata Nannotax3 - ntax_cenozoic - Algirosphaera cucullata

Algirosphaera cucullata


Classification: ntax_cenozoic -> Syracosphaerales -> Rhabdosphaeraceae -> Algirosphaera -> Algirosphaera cucullata
Sister taxa: A. cucullata, A. fabaceus, A. meteora, A. robusta, A. sp.

Taxonomy:

Citation: Algirosphaera cucullata (Lecal-Schlauder 1951) Young et al., 2003
taxonomic rank: Species
Basionym: Acanthoica cucullata Lecal-Schlauder 1951
Synonyms: Cyrtosphaera cucullata (Lecal-Schlauder 1951) Kleijne 1992

Distinguishing features:
Parent taxon (Algirosphaera): Body coccoliths with well-developed radial lath cycle; domal or double-lipped protrusion; coccosphere dimorphic, CFCs larger and taller
This taxon: Coccoliths rounded, protrusion formed of needle-like elements without tile cover

Farinacci & Howe catalog pages: A. cucullata *


Morphology:

Coccosphere weakly varimorphic (protrusions rather higher toward apical pole).
Coccoliths with domal protrusion, “bowler hat” shaped. Like Algirosphaera robusta but lacks discrete polar coccoliths; liths are less elongate; and protrusion is covered by elongate needle-like elements, rather than tile-like elements.

Search data:
LITHS: planolith, elliptical, CA: ca_disjunct, grill, process,
CSPH: equant, monomorphic,
Lith size: 2->4µm; Coccosphere size: 8->11µm; Liths per sphere: 35->70
Data source notes: lith size from Kleijne 1992 (BC width) & slightly extended; csph data from Cros & Fortuño 2003; lith numbers from Yang & Wei 2003, range inferred from single estimate
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: present in the plankton (Young et al. 2003)
First occurrence (base): within No known fossil record modern (0.00-0.00Ma, base in "Holocene" stage). Data source: [JRY rough estimate]

Plot of occurrence data:

References:

Cros, L. & Fortuño, J. -M. (2002). Atlas of northwestern Mediterranean coccolithophores. Scientia Marina. 66: 1-186. gs

Kleijne, A. (1992). Extant Rhabdosphaeraceae (coccolithophorids, class Prymnesiophyceae) from the Indian Ocean, Red Sea, Mediterranean Sea and North Atlantic Ocean. Scripta Geologica. 100: 1-63. gs

Lecal-Schlauder, J. (1951). Recherches morphologiques et biologiques sur les Coccolithophorides Nord-Africains. Annales de l'Institut Océanographique, Monaco & Paris. 26: 255-362. gs

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. S1: 1-132. gs


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Algirosphaera cucullata compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 2-3-2024

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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=19 Go to Archive.is to create a permanent copy of this page - citation notes
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