Trochoaster martinii


Classification: Coccolithophores -> Nannolith families inc sed -> Lithostromationaceae -> Lithostromation -> Trochoaster martinii
Sister taxa: L. biconvexitas, L. operosum, L. perdurum, L. simplex, L. sp., T. martinii,

Distinguishing features: Hexradiate with distinct free rays, all 6 rays similar,  ridge runs along length of rays


Taxonomy:

Citation: Trochoaster martinii Best & Müller 1972
Rank: Species
Notes & discussion: This seems to be a discrete form, but should be recombined in Lithostromation if used.

Farinacci & Howe catalog pages: Trochoaster martinii *

Distinguishing features: Hexradiate with distinct free rays, all 6 rays similar,  ridge runs along length of rays


Ecology & Biogeography: Described from low diversity, low salinity deposits

Search data:
TagsLITHS: nannolith-radiate, hexagonal, star-shaped,
CSPH: not known, V-UNITS: all, R-UNITS: none, DETAILS: 1ou,
MetricsLith size: 10->15µm; Segments: 6->6;
Sources: lith size from ODs & 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 Early Miocene Sub-Epoch (15.97-23.03Ma, top in Burdigalian stage). Data source: original description
First occurrence (base): within Early Miocene Sub-Epoch (15.97-23.03Ma, base in Aquitanian stage). Data source: original description

Plot of occurrence data:

References:

Best, G. & Müller, C., (1972). Nannoplankton-Lagen im Unter-Miozan von Frankfurt am Main. Senckenbergiana lethaea, 53(1/2): 103-117.

nannotaxlogo400px

Trochoaster martinii compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 17-10-2018

Taxon Search:
Advanced Search
Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=1443Go to Archive.is to create a permanent copy of this page - citation notes
Powered by Mikrotax taxonomy content management system developed by Jeremy Young


Comments (1)

Sort By
Page 1 of 1
 
Gravatar
Ines Galovic (CGS, Croatia)
It looks like Actiniscus pentasterias (Ehrenberg) Ehrenberg.
Gravatar
Jeremy Young (UCL, UK)
Indeed Actiniscus and Trochoaster can look really similar in SEM - but of course in LM there is no problem to separate them, as Actiniscids are siliceous
Notify Me
Page 1 of 1
 
Share a link to this comment
Close

Add Comment

* Required information
1000
Captcha Image
Powered by Commentics