Rucinolithus wisei


Ancestry: Mesozoic -> Nannoliths inc sedis -> Nannoliths inc sed - radiate multielement -> Rucinolithus -> Rucinolithus wisei
Sister taxa: R. hayi, R. magnus, R. oriens, R. wisei, R. pinnatus, R. sumastrocyclus, R. windleyae, R. sp.,

Short diagnosis: 6 imbricate, asymmetric rays


Taxonomy:

Citation: Rucinolithus wisei Thierstein, 1971
Rank: Species

Farinacci & Howe catalog pages: Rucinolithus wisei *

Short diagnosis: 6 imbricate, asymmetric rays

Geological Range:
Last occurrence (top): within Early Valanginian Substage (136.41-139.39Ma, top in Valanginian stage). Data source: Bralower et al., 1989
First occurrence (base): within Late Berriasian Substage (139.39-141.93Ma, base in Berriasian stage). Data source: Bralower et al., 1989

Plot of occurrence data:

References:

Thierstein, H.R., (1971). Tentative Lower Cretaceous Calcareous Nannoplankton Zonation. Eclogae Geologicae Helvetiae, 64: 459-488.


Nannotax3 - Mesozoic - Rucinolithus wisei by: Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 29-6-2017

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Maurice Kevin Cooper

Hi Jerermy, Bralower et al. 1989 does not give a Late Valanginian age for R, wisei he place the top of R. wisei at the top of E calpionellid zone which is top Early Valanginian and between M13 and M12N polarity chron which is intra Early Valanginian in age in Gradstein 2012. I think the range should match the Neptune datebase in the Valanginian to Berriasian interval.

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Jeremy Young

cheers Kevin- I will change the LAD to Early Valanginian

Jeremy

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