Navilithus altivelum


Classification: ntax_cenozoic -> Coccolith families inc sed -> narrow rimmed placoliths -> Navilithus -> Navilithus altivelum
Sister taxa: N. altivelum, N. sp.

Taxonomy:

Citation: Navilithus altivelum Young & Andruleit, 2006
Rank: Species

Distinguishing features: same as genus, monospecific

Farinacci & Howe catalog pages: N. altivelum *


Morphology:
Coccospheres: subspherical, polymorphic.
Body coccoliths: Elliptical, rim narrow with sub-horizontal distal and proximal shields connected by a low tube. The coccolith is floored by a central area plate which supports a low robust spine with irregular structure.
Moderately elevated coccoliths: similar to the body coccoliths but have higher spines.
Circum-flagellar sail-coccoliths: Base similar to that of body coccoliths; spine very tall, cross-shaped in plan view with the arms extending parallel to the long axis very short; base of the sail is elevated slightly above the rim. The spine structure is regular, with each blade of the sail being formed of two series of elements originating from either side of the blade and interfingering toward the outer margin of the sail

Size: Coccospheres 5-8µm with 200-300 body coccoliths, ca 15 sail coccoliths and 10-20 moderatley elevated coccoliths. BCs 0-7-1.0µm; Sail coccoliths 1.3-2.2 µm high.


Ecology & Biogeography: Deep-photic, sub thermocline

Search data:
TagsLITHS: placolith, elliptical, CA: ca_disjunct, plate, process,
CSPH: equant, BC-dimorphic, CFC,
MetricsLith size: 0.7->1µm; Coccosphere size: 5->8µm; Liths per sphere: 200->300
Data source notes: lith size from OD
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:

Cruz, J., Wise, S. W. & Young, J. R. (2014). First observation of Navilithus altivelum in the Gulf of Mexico. Journal of Nannoplankton Research. 34(special): 27-29. gs V O

Skejic, S. et al. (2018). Coccolithophore diversity in open waters of the middle Adriatic Sea in pre- T and post-winter periods. Marine Micropaleontology. 143(1): 30-45. gs

Young, J. R. & Andruleit, H. (2006). Navilithus altivelum: a remarkable new genus and species of deep photic coccolithophores. Journal of Micropalaeontology. 25(2): 141-152. gs V O


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Navilithus altivelum 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=897 Go to Archive.is to create a permanent copy of this page - citation notes



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