Nannotax3 - ntax_mesozoic - Eiffellithus lindiensis Nannotax3 - ntax_mesozoic - Eiffellithus lindiensis

Eiffellithus lindiensis


Classification: ntax_mesozoic -> Eiffellithales -> Eiffellithaceae -> Eiffellithus -> Eiffellithus lindiensis
Sister taxa: E. eximius, E. lindiensis ⟩⟨ E. gorkae, E. keio, E. parallelus, E. pospichalii, E. turriseiffelii ⟩⟨ E. collis, E. equibiramus, E. parvus ⟩⟨ E. monechiae, E. praestigium, E. vonsalisiae, E. hancockii, E. paragogus ⟩⟨ E. primus, E. striatus, E. windii, E. sp.

Distinguishing features:
Parent taxon (Eiffellithus): Loxolith coccoliths with a prominent inner rim cycle that is birefringent and conspicuous in cross-polarised light; this cycle is broader than the outer rim cycle. The central area is spanned by variably-orientated cross-bars.
This taxon: Small (3-5 µm) Eiffellithus, cross-bars axially aligned, terminations simple


Taxonomy:

Citation: Eiffellithus lindiensis Lees, 2007
taxonomic rank: Species

Farinacci & Howe catalog pages: E. lindiensis *

Distinguishing features:
Parent taxon (Eiffellithus): Loxolith coccoliths with a prominent inner rim cycle that is birefringent and conspicuous in cross-polarised light; this cycle is broader than the outer rim cycle. The central area is spanned by variably-orientated cross-bars.
This taxon: Small (3-5 µm) Eiffellithus, cross-bars axially aligned, terminations simple


Morphology:

"A small species of Eiffellithus in which the small, indistinct central cross is axially aligned. The inner cycle fills the central area. Differentiation: This new species is easily distinguished from E. eximius, which is much larger, and has a distinctive, bifurcating cross that takes up more of the central area. Furthermore, E. lindiensis ranges up into the Maastrichtian. It is distinct from other Late Cretaceous eiffellithids in being small and having an axial cross." [Lees 2007]

Size:
The size is not specified in the original diagnosis but the holotype is 4.4µm long and illustrated specimens are 3-5µm.

Search data:
LITHS: murolith, elliptical, CA: cross-axial, ca_disjunct, plate, process, closed, CROSS-POLARS: rim-bicyclic, V-prominent, R-prominent,
Lith size: 3->5µm;
Data source notes: original description & illustrated specimens
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): within Maastrichtian Stage (66.04-72.17Ma, top in Maastrichtian stage). Data source: Lees 2007 (original description)
First occurrence (base): within Campanian Stage (72.17-83.65Ma, base in Campanian stage). Data source: Lees 2007 (original description)

Plot of occurrence data:

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 O


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Eiffellithus lindiensis compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 16-4-2024

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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=10412 Go to Archive.is to create a permanent copy of this page - citation notes
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