Discoaster distinctus


Ancestry: Coccolithophores -> Discoasterales -> Discoasteraceae -> Discoaster -> D. nodifer group -> Discoaster distinctus
Sister taxa: D. cruciformis, D. colletii, D. gemmifer, D. mediosus, D. binodosus, D. nodifer, D. distinctus, D. septemradiatus, D. tanii, D. ornatus, D. istanbulensis, D. martinii, D. williamsii, D. backmanii, D. okadai,

Short diagnosis: 5-6 rayed stellate discoasters; ray tips with bifurcation and lateral nodes (resemble spanners).


Taxonomy:

Citation: Discoaster distinctus Martini, 1958
Rank: Species
Synonyms: Discoaster nivalis Manivit 1959 [my interpretation - JRY 2015]
Discoaster bronnimanni Stradner 1961[my interpretation - JRY 2015]
Discoaster turkiensis Sadek & Ozer 1981[my interpretation - JRY 2015]

Farinacci & Howe catalog pages: Discoaster bronnimanni * Discoaster distinctus * Discoaster nivalis * Discoaster turkiensis *

Short diagnosis: 5-6 rayed stellate discoasters; ray tips with bifurcation and lateral nodes (resemble spanners).

See also: Discoaster deflandrei - very similar but bifurcations less angular;Discoaster nodifer - similar but ray tip notched rather than bifurcate;;

Geological Range:
Last occurrence (top): within NP15 zone (42.87-46.29Ma, top in Lutetian stage). Data source: PRB entry to Nannotax
First occurrence (base): within NP15 zone (42.87-46.29Ma, base in Lutetian stage). Data source: PRB entry to Nannotax

Plot of occurrence data:

References:

Martini, E., (1958). Discoasteriden und verwandte Formen im NW-deutschen Eozän (Coccolithophorida). 1. Taxonomische Untersuchungen. Senckenbergiana lethaea, 39: 353-388.


Nannotax3 - Coccolithophores - Discoaster distinctus by: Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 28-4-2017

Taxon
Search
Search term: in module
Advanced
Search




Comments (1)

Sort By
Page 1 of 1
 
Gravatar
J Kell (Lincoln Nebraska, US)
I think the bifurcate ray-tips resemble wrenches. :)
Gravatar
Mike Styzen (Noble Energy, US)
Is this a synonym of Discoaster saundersi, Hay et al. 1967?
Gravatar
Paul Bown (Univeristy College London, UK)
The holotypes do look similar, but I think the wrench-like ray endings may be more angular in D. distinctus.
Gravatar
Mike Styzen (Noble Energy, US)
D. saundersi looks like an elvis species to me
Gravatar
Paul Bown (Univeristy College London, UK)
I agree! Spanner is UK English for wrench! Two nations divided by a common language!
Gravatar
J Kell (Lincoln Nebraska, US)
hahaha
Page 1 of 1
 

Add Comment

* Required information
1000
Captcha Image
Powered by Commentics