Singanoa


Classification: Mesozoic -> Nannoliths inc sedis -> Microrhabdulaceae -> Singanoa
Sister taxa: Lithraphidites, Microrhabdulus, Pseudomicula, Singanoa,

Distinguishing features: Rod-shaped nannolith composed of four blocks, with central constriction.


Daughter taxa: (blue => in age window 0-800Ma)
Diagnosis as for the genus
Specimens not identified to species level

Taxonomy:

Citation: Singanoa Lees, 2007
Rank: Genus
Type species: Singanoa scapus Lees, 2007

Farinacci & Howe catalog pages: Singanoa *

Distinguishing features: Rod-shaped nannolith composed of four blocks, with central constriction.


Morphology remarks: "Nannolith of various lengths, comprising four narrow blocks, arranged end-to-end in two pairs. Diagonal blocks go into extinction together, and a dark extinction area in the centre gives the appearance of a constriction in the nannolith (like a scroll tied at the middle)." [Lees 2007]

Geological Range:
Last occurrence (top): in lower part of Maastrichtian Stage (36% up, 69.9Ma, in Maastrichtian stage). Data source: Total of range of species in this database
First occurrence (base): in upper part of Campanian Stage (63% up, 76.3Ma, in Campanian 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. gs


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Singanoa compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 18-10-2019

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Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=11091 Go to Archive.is to create a permanent copy of this page - citation notes



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