CATALOG - Discoaster tridenus


Folder trail: Farinacci -> D -> Discoaster -> Discoaster tridenus
Folders this level: << < D. tani, D. tani nodifer, D. tani ornatus, D. tarosus, D. tetracladus, D. tinguarensis, D. tliouanetensis, D. tokerae, D. toralus, D. tortoniensis, D. transitus, D. triangularis, D. tribollii, D. tribrachiatus, D. tribrachiatus robustus, D. tridenus, D. trifolius, D. trinidadensis, D. trinus, D. tristellifer, D. triuncinus, D. tuberi, D. tumescens, D. turkiensis, D. ulnatus, D. uncinatus, D. variabilis, D. variabilis decorus, D. variabilis pansus, D. variabilis sastrii, > >>

Scans of pages from the "Catalogue of Calcareous Nannofossils" as compiled by Prof A. Farinacci 1969-1989 and updated by Richard Howe 2000-2016 - see also this page.
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Current identification/main database link: Discoaster pentaradiatus Tan, 1927

Compiled data

Citation: Discoaster tridenus Kamptner 1967
Rank: Species
Type locality: Atlantic Ocean
Type level: Not given
Standardised type level: 140_NEOGENE
Type sample: Sample: Challenger 338; From: S. Atlantic 21S 14W; Likely age: NN21
Type repository: Vienna, Natural History Museum
Repository Country: Austria
Farinacci catalog page: 06087
Language: DE
Notes: ?D. quintatus


Notes
Translated diagnosis:  The found specimen is a five-pointed star. Each of the arms, which are of the same type, extends downwards from the center in an arc to the periphery. Just at the origin, the arms each have a width and height of 1.3 μm; They become narrower towards the tip to 0.35 μm.  The calcreous-body rises above the plane which can be laid through the five tips of the arms to approximately 7 μm.  The tips of two adjacent arms are approximately 12 μm apart.

NB The topotype material, Challenger Dredging 338, is a Holocene sediemnt with rare reworked Pliocene discoasters, including moderately preserved D. pentaradiatus [JRY unpbl. obs.]

References:

Kamptner, E. (1967). Kalkflagellaten - Skelettreste aus Tiefseeschlamm des S├╝datlantischen Ozeans. Annalen des Naturhistorischen Museums in Wien. 71: 117-198. gs


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Discoaster tridenus: Catalog entry compiled by Anna Farinacci and Richard Howe. Viewed: 24-7-2019

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