Actiniscus pentasterias


Classification: non_cocco -> Dinophytes -> Silicifying dinoflagellates -> Actiniscus -> Actiniscus pentasterias
Sister taxa: Actiniscus pentasterias,

Distinguishing features: Skeletal bodies are 5-rayed with concavo-convex shape and a sculpted surface

Taxonomy:

Citation: Actiniscus pentasterias (Ehrenberg 1840) Ehrenberg 1843
Rank: Species
Basionym: Dictyota pentasterias Ehrenberg 1840
Notes & discussion: This is the only extant marine species. According to Algaebase 36 species have been described in Actiniscus, predominantly by Ehrenberg. Of these they regard the following as 'currently accepted' These names do appear on taxonomic name lists but not in publications on the algae.
Update - as noted by Ines Galovic (see comments) Dumitrica (1973) and Locker & Martin (1986) provided detailed fossil record data on actiniscids, and described several taxa.

Distinguishing features: Skeletal bodies are 5-rayed with concavo-convex shape and a sculpted surface


Morphology remarks: There is an obvious superficial similarity with discoasters but this is most likely coincidental

Geological Range:
Last occurrence (top): Extant Data source: Total of range of species in this database
First occurrence (base): within No known fossil record modern (0.00-0.00Ma, base in stage). Data source: Total of range of species in this database

References:

Dumitrica, P., (1973). Cenozoic endoskeletal dinoflagellates in southwestern Pacific sediments cored during Leg 21 of the DSDP

Ehrenberg, C.G., (1843). Über die verbreitung des jetzt wirkenden kleinsten organischen lebens in Asien, Australien und Afrika und über die vorherrschende bildung auch des oolithkalkes der Juraformation aus kleinen polythalamischen thieren. Ber. Verh. Preuss. Akad. Berlin 1843: 100-106.

Locker, S. & Martini, E., (1986). Ebridians and actiniscidians from the southwest Pacific. Initial Reports of the Deep Sea Drilling Project, 90: 941-951.


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Actiniscus pentasterias compiled by Jeremy R. Young viewed: 19-12-2018

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Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=20004Go to Archive.is to create a permanent copy of this page - citation notes



Comments (2)

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Ines Galovic (Croatia)
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Jeremy Young (UK)

thanks - I will add a reference to that paper.

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Ines Galovic (Croatia)
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