Zeugrhabdotus scutula


Classification: Mesozoic -> Eiffellithales -> Chiastozygaceae -> Zeugrhabdotus -> Zeugrhabdotus scutula
Sister taxa: Z. blowii, Z. burolletii, 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. burwellensis, Z. kerguelenensis, 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 or diffusely bicyclic, medium-large (6-9µm); bar complex; narrow rim/large openings


Taxonomy:

Citation: Zeugrhabdotus scutula (Bergen, 1994) Rutledge & Bown, 1996
Rank: Species
Basionym: Reinhardtites scutula Bergen, 1994
Notes & discussion: NB scutula is Latn for rhombus, this is a noun and so does not change gender.

Farinacci & Howe catalog pages: Reinhardtites scutula *

Distinguishing features: Unicyclic or diffusely bicyclic, medium-large (6-9µm); bar complex; narrow rim/large openings


Morphology remarks: Medium-large (6-9µm) Zeugrhabdotus with relatively narrow unicyclic or diffusely bicyclic rim and wide central area spanned by a complexly constructed transverse bar. Four triangular projections support the two, distally-fused bars of the bridge and are conspicuous in the XPL. The narrow bridge consists of two optically separate bars that are fused and surmounted by a diamond-shaped distal process. The whole coccolith is moderately birefringent (grey-white), with the distal process yielding the brightest birefringence.

Search data:
TagsLITHS: murolith, CA: process, bar, V-UNITS: V-prominent, DETAILS: ca_disjunct, rim-unicyclic,
MetricsLith size: 6->9µm;
Sources: original description +/-0.5µm
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: Bown et al. 1998
First occurrence (base): within Late Hauterivian Substage (130.77-133.09Ma, base in Hauterivian stage). Data source: Bown et al. 1998

Plot of occurrence data:

  • Histogram - Neptune occurrence data from DSDP and ODP proceedings. Pale shading <50 samples in time bin. Interpret with caution & read these notes
  • Note to users in China - the diagram may not plot unless you use a VPN since I use google services on the website. If this is a problem please contact me 谢谢.
  • Taxon plotted: Zeugrhabdotus scutula, synonyms included - Reinhardtites scutula; Zeugrhabdotus scutula;
  • space-time plot :: Samples map :: Parent: Zeugrhabdotus

    References:

    Bergen, J. A. (1994). Berriasian to early Aptian calcareous nannofossils from the Vocontian Trough (SE France) and Deep Sea Drilling Site 534: new nannofossil taxa and a summary of low-latitude biostratigraphic events. Journal of Nannoplankton Research. 16: 59-69. gs

    Blair, S. A. & Watkins, D. K. (2009). High-resolution calcareous nannofossil biostratigraphy for the Coniacian/Santonian Stage boundary, Western Interior Basin. Cretaceous Research. 30(2): 367-384. gs

    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

    Bown, P. R., Rutledge, D. C., Crux, J. A. & Gallagher, L. T. (1998). Early Cretaceous. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series. 86-131. gs

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

    Rutledge, D. & Bown, P. R. (1996). New names for old: taxonomic clarification of some Early Cretaceous nannofossil marker-species. Journal of Nannoplankton Research. 18: 53-59. gs


    nannotaxlogo400px

    Zeugrhabdotus scutula compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 31-3-2020

    Taxon Search:
    Advanced Search

    Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=11341 Go to Archive.is to create a permanent copy of this page - citation notes



    Comments (0)

    No comments yet on this page. Please do add comments if you spot any problems, or have information to share

    Add Comment

    * Required information
    1000
    Captcha Image
    Powered by Commentics