Tetralithoides quadrilaminata


Classification: ntax_cenozoic -> Coccolith families inc sed -> narrow rimmed placoliths -> Tetralithoides -> Tetralithoides quadrilaminata
Sister taxa: T. quadrilaminata, T. symeonidesii, T. sp.

Taxonomy:

Citation: Tetralithoides quadrilaminata (Okada & McIntyre 1977) Jordan, Kleijne & Heimdal, 1993
Rank: Species
Basionym: Cricosphaera quadrilaminata Okada & McIntyre 1977
Variants: Umbilicosphaera angustiforamen Okada & McIntyre 1977 - this looks to be T. quadrilaminata with slightly wider rim than usual, and the four plates in the central area poorly imaged [my interpretation - JRY 2015]

Distinguishing features: Coccoliths elliptical with narrow placolith rim surrounding central-area filled by four (rarely three) plates

Farinacci & Howe catalog pages: C. quadrilaminata * , U. angustiforamen *


Morphology: Coccosphere monomorphic, spherical. Coccoliths elliptical with narrow placolith rim surrounding central-area filled by four (rarely three) plates.

Size: Coccoliths 4-8 µm long.


Ecology & Biogeography: A rare species

Search data:
TagsLITHS: placolith, elliptical, CA: ca_disjunct, plate, closed,
CSPH: equant, monomorphic, CROSS-POLARS: rim-unicyclic, V-prominent, R-prominent,
MetricsLith size: 4->7.5µm; Coccosphere size: 15->25µm; Liths per sphere: 70->130
Data source notes: csph & lith size from OD & illustrated specimens; 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 Pliocene Epoch (2.59-5.33Ma, base in Zanclean stage). Data source: Young 1998

Plot of occurrence data:

References:

Okada, H. & McIntyre, A. (1977). Modern coccolithophores of the Pacific and North Atlantic Oceans. Micropaleontology. 23(1): 1-55. gs

Young, J. R. (1998). Neogene. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series. 225-265. gs V O

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


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Tetralithoides quadrilaminata compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 1-3-2021

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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=1407 Go to Archive.is to create a permanent copy of this page - citation notes



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