Nannotax3 - ntax_cenozoic - Catinaster Nannotax3 - ntax_cenozoic - Catinaster

Catinaster


Classification: ntax_cenozoic -> Discoasterales -> Discoasteraceae -> Catinaster
Sister taxa: Discoaster, Catinaster, Candeodiscoaster

Daughter taxa (time control age-window is: 0-800Ma)
Catinaster calyculus
Curved rays extend beyond basket
Catinaster coalitus
Rays bifurcate to form distal rim of basket, but do not extend significantly beyond it
Catinaster sp.
Specimens which cannot be assigned to established species

Taxonomy:

Citation: Catinaster Martini and Bramlette, 1963
taxonomic rank: Genus
Type species: Catinaster coalitus Martini & Bramlette 1963

Distinguishing features:
Parent taxon (Discoasteraceae): Discoidal discoasteralids formed of one, non-birefringent in plan view, cycle.
This taxon: Discoasterids with bifurcate ray tips that meet to form a basket like structure (Miocene)

Farinacci & Howe catalog pages: Catinaster *


Morphology:

Catinasters are rather curious sub-cylindrical or cup-shaped nannofossils. They have six-fold radial symmetry and the same crystallographic orientation as discoasters. There are two main species, C. coalitus which has septae-like radial structures confined to the cup, and C. calyculus in which radial structures extend beyond the cup. The cup was probably formed by fusion of the bifurcations of a small discoaster (Martini & Worsley 1971, Peleo-Alampay et al., 1998).

Search data:
LITHS: nannolith-radiate, star-shaped, CROSS-POLARS: 1ou, V-prominent,
Lith size: 4->13µm; Segments: 6->6;
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): at top of NN10 zone (100% up, 8.3Ma, in Tortonian stage). Data source: Total of ranges of the species in this database
First occurrence (base): within NN8 zone (10.55-10.89Ma, base in Tortonian stage). Data source: Total of ranges of species in this database

Plot of occurrence data:

References:

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

Martini, E. & Worsley, T. (1971). Tertiary calcareous nannoplankton from the western equatorial Pacific. Initial Reports of the Deep Sea Drilling Project. 7: 1471-1507. gs

Peleo-Alampay, A., Bukry, D., Liu, L. & Young, J. R. (1998). Late Miocene calcareous nannofossil genus Catinaster: taxonomy, evolution and magnetobiostratigraphy. Journal of Micropalaeontology. 17(1): 71-85. gs

Raffi, I., Backman, J. & Rio, D. (1998). Evolutionary trends of tropical calcareous nannofossils in the late Neogene. Marine Micropaleontology. 35(1): 17-41. gs

Young, J. R. (1998). Neogene. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series . 225-265. gs


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Catinaster compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 23-4-2024

Taxon Search:
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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=239 Go to Archive.is to create a permanent copy of this page - citation notes
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