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Discoaster musicus

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Cenozoic Taxa

Discoaster musicus

Edited by Lyndsey on Thu, 10/03/2011 - 13:21

Discoaster musicus Stradner, 1959

Description: 6-rayed discoaster with bifurcate rays, similar to D. exilis in having complanate rays with triangular tips, but with wide central area and large distal boss with prominent sutural ridges extending between the rays.

Remarks: D. musicus has, like D. bollii, a well developed central area and distal knob. However, it lacks a proximal knob; the distal knob is lower than in D. bollii; and sutural rays run from it to the edge of the central area. Possibly better considered as a variety of D. exilis.

Original description:

Discoaster musicus 060336.jpg

Synonym (or variant): Discoaster sanmiguelensis Bukry, 1981

Geological Time Data
Geological Time Periods: 
NN5
NN6
Biblio Reference: 
Young, JR.  1998.  Neogene. Calcareous nannofossil biostratigraphy. :225-265.
Notes on occurrence information: 
Confined to NN5 in the Mediterranean (Theodoridis 1984) but ranges into NN6 in the East Pacific (Bukry 1981), distribution probably patchy
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