Eoconusphaera zlambachensis


Classification: Mesozoic -> Nannoliths inc sedis -> Eoconusphaeraceae -> Eoconusphaera -> Eoconusphaera zlambachensis
Sister taxa: E. zlambachensis, E. sp.,

Distinguishing features: Tall tapering nannoliths with steeply sloping rim and central area filled with a mass of radially arranged elements. Most commonly seen in side view. LM image shows relatively uniformily birefringent core with axial extinction line.


Taxonomy:

Citation: Eoconusphaera zlambachensis (Moshkovitz, 1982) Kristan-Tollmann, 1988
Rank: Species
Basionym: Conusphaera zlambachensis Moshkovitz, 1982
Synonyms:

Farinacci & Howe catalog pages: Conusphaera zlambachensis * , Eoconusphaera tollmanniae *

Distinguishing features: Tall tapering nannoliths with steeply sloping rim and central area filled with a mass of radially arranged elements. Most commonly seen in side view. LM image shows relatively uniformily birefringent core with axial extinction line.

Search data:
TagsLITHS: nannolith-radiate, elliptical, cylindrical, CA: closed, DETAILS: rim-unicyclic,
MetricsLith size: 5->10µm;
Sources: illustrated specimens
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Notes: Gardin et al. (2012) record FO near base of the Rhaetian.
Last occurrence (top): within NT2b subzone (201.10-218.91Ma, top in Hettangian stage). Data source: Bown 1998b
First occurrence (base): within NT2b subzone (201.10-218.91Ma, base in Norian stage). Data source: Bown 1998b

Plot of occurrence data:

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

    References:

    Bown, P. R. & Cooper, M. K. E. (1989a). Conical nannofossils in the Mesozoic. In, Crux, J. A. & van Heck, S. E. (eds) Nannofossils and their applications. British Micropalaeontological Society Publication Series. 98-106. gs

    Bown, P. R. (1987a). Taxonomy, evolution, and biostratigraphy of Late Triassic-Early Jurassic calcareous nannofossils. Special Papers in Palaeontology. 38: 1-118. gs

    Bown, P. R. (1998b). Triassic. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series. 29-33. gs

    Bralower, T. J., Bown, P. R. & Siesser, W. (1991). Significance of Upper Triassic nannofossils from the Southern Hemisphere (ODP Leg 122, Wombat Plateau, NW Australia). Marine Micropaleontology. 17: 119-154. gs

    Gardin, G., Krystyn, L., Richoz, S., Bartolini, A. & Galbrun, B. (2012). Where and when the earliest coccolithophores?. Lethaia. 45: 507-523. gs

    Kristan-Tollmann, E. (1988b). Coccolithen aus den Älteren Allgäuschichten (Alpiner Lias, Sinemur) von Timor, Indonesien. Geologische und Paläontogische Mitteilungen Innsbruck. 15: 71-83. gs

    Moshkovitz, S. (1982). On the findings of a new calcareous nannofossil (Conusphaera zlambachensis) and other calcareous organisms in the Upper Triassic sediments of Austria. Eclogae Geologicae Helvetiae. 75: 611-619. gs


    nannotaxlogo400px

    Eoconusphaera zlambachensis compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 6-4-2020

    Taxon Search:
    Advanced Search

    Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=10429 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