Lapideacassis trispina


Classification: Coccolithophores -> Nannolith families inc sed -> Lapideacassaceae -> Lapideacassis -> Lapideacassis trispina
Sister taxa: L. glans, L. mariae, L. asymmetrica, L. blackii, L. magnifica, L. bispinosa, L. wisei, L. trispina, L. multispinata, L. sp.,

Taxonomy:

Citation: Lapideacassis trispina Perch-Nielsen, in Perch-Nielsen & Franz, 1977
Rank: Species

Distinguishing features: 3 spines sub-horizontal, evenly spaced; tiered; proximal collar

Farinacci & Howe catalog pages: Lapideacassis trispina *


Morphology remarks: Nannolith with a proximal tier and collar, two distal tiers, an apical cone and three apical spines. The spines are nearly horizontal and at an angle of 120° to each other in apical projection

Search data:
TagsLITHS: nannolith-radiate, circular, cylindrical, hollow, CA: process, PROCESS: hollow, R-UNITS: R-prominent,
MetricsLith size: 10->14µm; Segments: 8->12;
Sources: length (excluding spines) from illustrated specimens; elem numbers from count on SEM image and extend range by +-2
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): within NP4 zone (61.51-63.25Ma, top in Selandian stage). Data source: Perch-Nielsen & Franz 1977
First occurrence (base): within Turonian Stage (89.77-93.90Ma, base in Turonian stage). Data source: Burnett 1998

Plot of occurrence data:

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

    References:

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

    Perch-Nielsen, K. & Franz, H. E. (1977). Lapideacassis and Scampanella, calcareous nannofossils from the Paleocene at sites 354 and 356, DSDP Leg 39, Southern Atlantic. Initial Reports of the Deep Sea Drilling Project. 39: 849-862. gs :: view :: open


    nannotaxlogo400px

    Lapideacassis trispina compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 5-8-2020

    Taxon Search:
    Advanced Search

    Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=807 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