Zeugrhabdotus kerguelenensis


Classification: ntax_mesozoic -> Eiffellithales -> Chiastozygaceae -> Zeugrhabdotus -> Zeugrhabdotus kerguelenensis
Sister taxa: Z. blowii, Z. burolletii, Z. burwellensis, Z. erectus, Z. fissus, Z. moulladei, Z. noeliae ⟩⟨ Z. bicrescenticus, Z. diplogrammus, Z. fluxus, Z. howei, Z. petrizzoae, Z. reticulatus, Z. scutula ⟩⟨ Z. biperforatus, Z. kerguelenensis, Z. large spine, Z. clubhousensis ⟩⟨ Z. clarus, Z. acanthus, Z. trivectis, Z. xenotus ⟩⟨ Z. angelozziae, Z. cooperi, Z. embergeri, Z. praesigmoides, Z. sigmoides, Z. simplex, Z. streetiae, Z. sp.

Distinguishing features: Unicyclic, large; with very broad spine, often seen in side view; broad rim/small openings


Taxonomy:

Citation: Zeugrhabdotus kerguelenensis Watkins, 1992
Rank: Species
Taxonomic discussion: Bown (2005) noted the occurrence of Z. embergeri specimens with simlarly massive spines in the Albian.

Farinacci & Howe catalog pages: Z. kerguelenensis *

Distinguishing features: Unicyclic, large; with very broad spine, often seen in side view; broad rim/small openings


Morphology: Similar to Zeugrhabdotus embergeri in size but with very large spine, and unicyclic rim.

Search data:
TagsLITHS: murolith, ca_disjunct, process, bar, CROSS-POLARS: rim-unicyclic, V-prominent,
MetricsLith size: 8->11µm;
Data source notes: original description
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): within Santonian Stage (83.64-86.26Ma, top in Santonian stage). Data source: orginal description
First occurrence (base): at base of UC9b subzone (0% up, 90.7Ma, in Turonian stage). Data source: Burnett 1998, fig.6.3

Plot of occurrence data:

References:

Bown, P. R. (2005c). Early to Mid-Cretaceous Calcareous Nannoplankton from the Northwest Pacific Ocean, Leg 198, Shatsky Rise. Proceedings of the Ocean Drilling Program, Scientific Results. 198: 1-82. gs V O

Burnett, J. A. (1998). Upper Cretaceous. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series. 132-199. gs V O

Watkins, D. K. (1992). Upper Cretaceous nannofossils from Leg 120, Kergeulen Plateau, Southern Ocean. Proceedings of the Ocean Drilling Program, Scientific Results. 120: 343-370. gs V O


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Zeugrhabdotus kerguelenensis compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 19-1-2021

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Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=11336 Go to Archive.is to create a permanent copy of this page - citation notes



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