Distinguishing features:
Parent taxon (Rarer genera): Less common genera
This taxon: Holococcoliths with a proximal plate of three blocks and tall, tapering spines.
Daughter taxa (time control age-window is: 0-800Ma) | ||||
Acuturris scotus Holococcoliths with a proximal plate of three blocks and tall, tapering spines. | ||||
Acuturris sp. Specimens not identified to species level |
Taxonomy:
Farinacci & Howe catalog pages: Acuturris *
Distinguishing features:
Parent taxon (Rarer genera): Less common genera
This taxon: Holococcoliths with a proximal plate of three blocks and tall, tapering spines.
Search data:
LITHS: holococcolith, elliptical, rod-shaped, CA: ca_conjunct, process, closed, CROSS-POLARS: rim-unicyclic, |
Lith size: 10->30µm; Segments: 3->3; Data source notes: size range of included species |
Geological Range:
Last occurrence (top): at top of Late Maastrichtian Substage (100% up, 66Ma, in Danian stage). Data source: Total of ranges of the species in this database
First occurrence (base): within Cenomanian Stage (93.90-100.50Ma, base in Cenomanian stage). Data source: Total of ranges of species in this database
Plot of occurrence data:
Burnett, J. A. (1998). Upper Cretaceous. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series . 132-199. gs O Wise, S. W. & Wind, F. H. (1977). Mesozoic and Cenozoic calcareous nannofossils recovered by DSDP Leg 36 drilling on the Falkland Plateau, south-west Atlantic sector of the Southern Ocean. Initial Reports of the Deep Sea Drilling Project. 36(269-491): -. gs OReferences:
Acuturris compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 5-10-2024
Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=10005 Go to Archive.is to create a permanent copy of this page - citation notes |
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