Nannotax3 - ntax_cenozoic - Catinaster coalitus

Catinaster coalitus


Classification: ntax_cenozoic -> Discoasterales -> Discoasteraceae -> Catinaster -> Catinaster coalitus
Sister taxa: C. calyculus, C. coalitus, C. mexicanus, C. sp.

Taxonomy:

Citation: Catinaster coalitus Martini & Bramlette 1963
Rank: Species
Variants:

Distinguishing features:
Parent taxon (Catinaster): Discoasterids with bifurcate ray tips that meet to form a basket like structure
This taxon: Rays bifurcate to form distal rim of basket, but do not extend significantly beyond it

Farinacci & Howe catalog pages: C. coalitus * , C. rotundus *


Morphology:

Catinaster with rays which bifurcate to form a distal rim, but which do not extend significantly beyond this rim. The rim continues to the proximal pole producing a basket-like body. N.B. short pseudo-rays are often formed where the tips of bifurcations meet.


Size:

Search data:
TagsLITHS: nannolith-radiate, star-shaped, polygonal, CROSS-POLARS: 1ou, V-prominent,
MetricsLith size: 4->9µm; Segments: 6->6;
Data source notes: size from OD and illustrated specimens
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Notes: This is the first Catinaster species to appear and is the most common. Its base is used as zonal marker for NN8 and in most other Neogene nanofossil zonaions. The last occurrence is more gradational and has not been used as a marker event. It should also be noted that is a very robust nannofossil and can easily be reworked.
Last occurrence (top): within NN10 zone (8.29-9.53Ma, top in Tortonian stage). Data source: Young 1998
First occurrence (base): at base of NN8 zone (0% up, 10.9Ma, in Tortonian stage). Data source: zonal marker (see e.g. Young 1998)

Plot of occurrence data:

References:

de Kaenel, E., Bergen, J. A., Browning, E., Blair, S. A. & Boesiger, T. M. (2017). Uppermost Oligocene to Middle Miocene Discoaster and Catinaster taxonomy and stratigraphy in the circum North Atlantic Basin: Gulf of Mexico and ODP Leg 154. Journal of Nannoplankton Research. 37(2-3): 215-244. gs O

Martini, E. & Bramlette, M. N. (1963). Calcareous nannoplankton from the experimental Mohole drilling. Journal of Paleontology. 37(4): 845-855. gs

Müller, C. (1974b). Calcareous nannoplankton, Leg 25 (Western Indian Ocean). Initial Reports of the Deep Sea Drilling Project. 25: 579-633. gs V O

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 V O


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Catinaster coalitus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 7-8-2022

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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=241 Go to Archive.is to create a permanent copy of this page - citation notes



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