Triquetrorhabdulus milowii

Classification: Coccolithophores -> Nannolith families inc sed -> Ceratolithaceae -> Triquetrorhabdulus -> Triquetrorhabdulus milowii
Sister taxa: T. carinatus, T. challengeri, T. longus, T. milowii, T. sp.,

Distinguishing features: Short (8-15µm), broad (5-8µm) species of Triquetrorhabdulus with curved sides. All blades similar.


Citation: Triquetrorhabdulus milowii Bukry, 1971
Rank: Species
Variants: T. auritus Stradner and Allram, 1982 - more wedge-shaped, occasionally with ridges at blunt end.

Farinacci & Howe catalog pages: Triquetrorhabdulus auritus * Triquetrorhabdulus milowii *

Distinguishing features: Short (8-15µm), broad (5-8µm) species of Triquetrorhabdulus with curved sides. All blades similar.

Search data:
TagsLITHS: nannolith-other, rod-shaped,
CSPH: not known, DETAILS: 1ou, length-fast,
MetricsLith size: 8->15µm; Segments: 3->3;
Sources: lith length from illustrated specimens
The morphological data given here can be used on the advanced search page. See also these notes

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:

  • Histogram - Neptune occurrence data from DSDP and ODP proceedings. Pale shading <50 samples in time bin. Interpret with caution & read these notes
  • Note to users in China - the diagram may not plot unless you use a VPN since I use google services on the website. If this is a problem please contact me 谢谢.
  • Taxon plotted: Triquetrorhabdulus milowii, synonyms included - Triquetrorhabdulus auritus; Triquetrorhabdulus millowii; Triquetrorhabdulus milowii; Triquetrorhabdulus milowii/auritus; Triquetrorhabdus milowii; testttspace-time plot :: Samples map :: Parent: Triquetrorhabdulus


    Bukry, D., (1971). Cenozoic calcareous nannofossils from the Pacific Ocean. San Diego Society of Natural History Transactions, 16: 303-327.GS

    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

    Young, J.R., (1998). Neogene. In: Bown, P.R. (Editor), Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publications Series. Chapman & Hall, London, pp. 225-265.GS


    Triquetrorhabdulus milowii compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 18-3-2019

    Taxon Search:
    Advanced Search

    Short stable page link: Go to to create a permanent copy of this page - citation notes

    Comments (0)

    No comments yet. Be the first!

    Add Comment

    * Required information
    Captcha Image
    Powered by Commentics