Lucianorhabdus tabernus


Classification: Mesozoic -> Holococcoliths -> Common genera -> Lucianorhabdus -> Lucianorhabdus tabernus
Sister taxa: L. cayeuxii, L. compactus, L. inflatus, L. maleformis, L. quadrifidus, L. salomonii, L. boudagherfadeliae, L. tabernus, L. turris, L. arborius, L. arcuatus, L. cubiterminalis, L. phlaskus, L. lageniformis, L. windii, L. sp.,

Distinguishing features: Small Lucianorhabdus with short conical, pojnted process and thin baseplate


Taxonomy:

Citation: Lucianorhabdus tabernus Lees, 2007
Rank: Species

Farinacci & Howe catalog pages: Lucianorhabdus tabernus * , ,

Distinguishing features: Small Lucianorhabdus with short conical, pojnted process and thin baseplate


Morphology remarks: A cavate species of Lucianorhabdus? with a medium-sized base-plate and short, conical spine. In XPL at 0 ̊, the lith is of low birefringence, and the thin base-plate is almost invisible. On rotation, the spine becomes bright and the base-plate just visible. Differentiation: Shorter than other lucianorhabdids, with a wider spine and equilateral-triangular outline. The new species bears some resemblance to the Paleocene Semihololithus tentorium Bown, 2005 (pl.31, figs 11-20), however, the new species has a much thinner, simpler base-plate and goes completely into extinction at 0 ̊, unlike S. tentorium

Size: Holotype dimensions: H = 5.28μm, W = 5.72μm

Geological Range:
Last occurrence (top): within Cenomanian Stage (93.90-100.50Ma, top in Cenomanian stage). Data source: Lees 2007 (original description)
First occurrence (base): within Cenomanian Stage (93.90-100.50Ma, base in Cenomanian stage). Data source: Lees 2007 (original description)

Plot of occurrence data:

  • (NB There is no histogram as there are no occurrence records for the taxon in the Neptune database) Parent: Lucianorhabdus

    References:

    Lees, J. A. (2007). New and rarely reported calcareous nannofossils from the Late Cretaceous of coastal Tanzania: outcrop samples and Tanzania Drilling Project Sites 5, 9 and 15. Journal of Nannoplankton Research. 29(1): 39-65. gs


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    Lucianorhabdus tabernus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 24-7-2019

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    Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=10624 Go to Archive.is to create a permanent copy of this page - citation notes



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