Amphicraspedum


Classification: rads_cenozoic -> Spongodiscidae -> Euchitoniidae -> Amphicraspedum
Sister taxa: Amphicraspedum, Dictyocoryne, Myelastrum, Perichlamydium, Rhopalastrum, Spongaster, Tessarastrum
Daughter taxa: (blue => in age window 0-800Ma)
Amphicraspedum murrayanum

neptune records: 60
Amphicraspedum prolixum

neptune records: 72
Amphicraspedum sp.

neptune records: 67

Taxonomy

Citation: Amphicraspedum Haeckel 1881
Rank: genus
Basionym: Amphicraspedum

Catalog entries: Amphicraspedum

Original description: 3c. Tribus: Euchitonida. Porodiscida brachiata, brachiis cameratis in plano aequatoriali sitis et e margine disci radiantibus (saepe aculeis brachiorum terminalibus, saepe brachiis patagio vel vimento camerato conjunctis).
A. brachiis duobus oppositis.
AII. brachiis dichotomis aut ramosis.
IIb. cum patagio.

Translated description: 3c. Tribe: Euchitonida. Porodiscida with arms, the chambered arms being situated in the equatorial plane and radiating from the margin of the disk (often with terminal spines on the arms, and often with the arms joined by a patagium or chambered web).
A. With two opposite arms.
AII. With the arms dichotomous or branched.
IIb. With patagium. (Translated from Latin by E.M.R. and W.R.R.)]
Remarks on original description: [This genus is placed in synonymy with AMPHIRHOPALUM Haeckel by Nigrini, 1967]

Description

Biogeography and Palaeobiology

Biostratigraphic distribution

Geological Range:
Last occurrence (top): at top of Chattian Stage (100% up, 23Ma, in Chattian stage). Data source: Total of range of species in this database
First occurrence (base): at base of Danian Stage (0% up, 66Ma, in Danian stage). Data source: Total of range of species in this database

Plot of occurrence data:

References:

Haeckel, E. (1882). Entwurf eines Radiolarien-Systems auf Grund von Studien der Challenger-Radiolarien [Basis for a radiolarian classification from the study of Radiolaria of the Challenger collection]. Jenaische Zeitschrift für Naturwissenschaft. 15: 418-472. gs


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Amphicraspedum compiled by the radiolaria@mikrotax project team viewed: 24-11-2020

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Short stable page link: http://mikrotax.org/radiolaria/index.php?id=203063 Go to Archive.is to create a permanent copy of this page - citation notes



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