Distinguishing features:
Parent taxon (muroliths inc sedis):
This taxon: Muroliths with central-area closed by overlapping plates.
Daughter taxa (time control age-window is: 0-800Ma) | ||||
Tortolithus caistorensis | ||||
Tortolithus carteri A brightly-birefringent species of Tortolithus | ||||
Tortolithus dodekachelyon Tortolithus with a murolith rim of 12 elements - 6 showing high birefringence and 6 low birefringence; central area with 3-5 overlapping plates showing low birefringence. | ||||
Tortolithus foramen Minute (<1µm) and with central perforation | ||||
Tortolithus furlongii | ||||
Tortolithus hallii | ||||
Tortolithus pagei | ||||
Tortolithus polygonatus | ||||
Tortolithus sp. Specimens not identified to species level |
Taxonomy:
Farinacci & Howe catalog pages: Tortolithus *
Distinguishing features:
Parent taxon (muroliths inc sedis):
This taxon: Muroliths with central-area closed by overlapping plates.
Search data:
LITHS: murolith, elliptical, CA: closed, plate, CROSS-POLARS: R-prominent, rim-unicyclic, |
Lith size: 2->11µm; Data source notes: size range of included species |
Geological Range:
Last occurrence (top): at top of Maastrichtian Stage (100% up, 66Ma, in Danian stage). Data source: Total of ranges of the species in this database
First occurrence (base): within Turonian Stage (89.39-93.90Ma, base in Turonian stage). Data source: Total of ranges of species in this database
Plot of occurrence data:
Crux, J. A., Hamilton, G. B., Lord, A. R. & Taylor, R. J. (1982). Tortolithus gen. nov. Crux and new combinations of Mesozoic calcareous nannofossils from England. INA Newsletter. 4(2): 98-101. gs References:
Tortolithus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 6-11-2024
Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=11226 Go to Archive.is to create a permanent copy of this page - citation notes |
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