Speetonia


Classification: Mesozoic -> Podorhabdales -> Cretarhabdaceae -> Speetonia
Sister taxa: Cretarhabdus, Cruciellipsis, Flabellites, Grantarhabdus, Helenea, Mattiolia, Miravetesina, Pickelhaube, Retecapsa, Speetonia,

Distinguishing features: Cretarhabdid with wide central area spanned by a transverse bar.


Daughter taxa: (blue => in age window 0-300Ma)
Cretarhabdid with wide central area spanned by a transverse bar.
Specimens not identified to species level

Taxonomy:

Citation: Speetonia Black, 1971
Rank: Genus
Type species: Speetonia colligata Black, 1971.

Farinacci & Howe catalog pages: Speetonia *

Distinguishing features: Cretarhabdid with wide central area spanned by a transverse bar.

Geological Range:
Last occurrence (top): within Hauterivian Stage (130.77-133.88Ma, top in Hauterivian stage). Data source: Total of range of species in this database
First occurrence (base): within Berriasian Stage (139.39-145.01Ma, base in Berriasian stage). Data source: Total of range of species in this database

Plot of occurrence data:

References:

Black, M., (1971). Coccoliths of the Speeton Clay and Sutterby Marl. Proceedings of the Yorkshire Geological Society, 38: 381-424.

Bown, P.R.; Rutledge, D.C.; Crux, J.A. & Gallagher, L.T., (1998). Early Cretaceous. In: Bown, P.R. (Editor), Calcareous nannofossil biostratigraphy. British Micropalaeontological Society Publication Series. Chapman & Hall, pp. 86-131.


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Speetonia compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 20-7-2018

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