arrayname: original
Taxonomy:
Distinguishing features:
Parent taxon (Triquetrorhabdulus): Elongate, tri-radiate nannoliths formed of a single calcite crystal with the c-axis parallel to the length of the nannolith. Nannolith straight with bilateral or trilateral symmetry. Shows high birefringence.
This taxon: Short (8-15µm), broad (5-8µm) species of Triquetrorhabdulus with curved sides. All blades similar.
Farinacci & Howe catalog pages: T. milowii * , T. auritus *
Search data:
LITHS: nannolith-other, rod-shaped, CROSS-POLARS: R-prominent, 1ou, |
Lith size: 8->15µm; Segments: 3->3; Data source notes: lith length from illustrated specimens |
Geological Range:
Last occurrence (top): within NN6 zone (11.90-13.53Ma, top in Serravallian stage). Data source: Young 1998
First occurrence (base): within NN1 zone (22.82-23.13Ma, base in Chattian stage). Data source: Young 1998
Plot of occurrence data:
Bown, P. R. & Dunkley Jones, T. (2012). Calcareous nannofossils from the Paleogene equatorial Pacific (IODP Expedition 320 Sites U1331-1334). Journal of Nannoplankton Research. 32(2): 3-51. gs O Bukry, D. (1971b). Cenozoic calcareous nannofossils from the Pacific Ocean. San Diego Society of Natural History Transactions. 16: 303-327. gs de Kaenel, E. & Villa, G. (1996). Oligocene-Miocene calcareous nannofossil biostratigraphy and paleoeecology from the Iberian Abyssal Plain. Proceedings of the Ocean Drilling Program, Scientific Results. 149: 79-145. gs O Perch-Nielsen, K. (1977). Albian to Pleistocene calcareous nannofossils from the Western South Atlantic, DSDP Leg 39. Initial Reports of the Deep Sea Drilling Project. 39: 699-823. gs O Stradner, H. & Allram, F. (1982). The nannofossil assemblages of Deep Sea Drilling Project Leg 66, Middle America trench. Initial Reports of the Deep Sea Drilling Project. 66: 589-639. gs Theodoridis, S. (1984). Calcareous nannofossil biostratigraphy of the Miocene and revision of the helicoliths and discoasters. Utrecht Micropaleontological Bulletin. 32: 1-271. gs O Young, J. R. (1998). Neogene. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series . 225-265. gs References:
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Triquetrorhabdulus milowii compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 22-4-2025
Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=1441 Go to Archive.is to create a permanent copy of this page - citation notes |
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