Thecatus


Classification: Mesozoic -> Holococcoliths -> Rarer genera -> Thecatus
Sister taxa: Bifidalithus, Bilapillus, Multipartis, Munarinus, Octolithus, Okkolithus, Ottavianus, Pharus, Ramsaya, Russellia, Saepiovirgata, Acuturris, Anfractus, Duocameratus, Lacunolithus-Bown, Metadoga, Nicholasia, Paulpearsonia, Petrobrasiella, Pseudoconus, Semihololithus, Stereorhabdus, Tanzanella, Thecatus, unidentified holococcoliths,

Distinguishing features: Cavate holococcolith with box-shape, high rim and thin proximal plate, short spine on distal surface


Daughter taxa: (blue => in age window 0-300Ma)

Specimens not identified to species level

Taxonomy:

Citation: Thecatus Lees, 2007
Rank: Genus

Farinacci & Howe catalog pages: Thecatus *

Distinguishing features: Cavate holococcolith with box-shape, high rim and thin proximal plate, short spine on distal surface

Geological Range:
Last occurrence (top): within Turonian Stage (89.77-93.90Ma, top in Turonian stage). Data source: Total of range of species in this database
First occurrence (base): within Turonian Stage (89.77-93.90Ma, base in Turonian stage). Data source: Total of range of species in this database

Plot of occurrence data:

References:

Lees, J.A., (2007). New and rarely reported calcareous nannofossils from the Late Cretaceous of coastal Tanzania: outcrop samples and Tanzania Drilling Project Sites 5, 9 and 15. Journal of Nannoplankton Research, 29(1): 39-65.


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Thecatus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 17-12-2018

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