Daughter taxa (time control age-window is: 0-800Ma) | ||||
Amphicraspedum murrayanum neptune records: 60 | ||||
Amphicraspedum prolixum neptune records: 72 | ||||
Amphicraspedum sp. neptune records: 67 |
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]
Geological Range:
Last occurrence (top): at top of Paleogene Period (100% up, 23Ma, in Aquitanian stage). Data source: Total of ranges of the species in this database
First occurrence (base): within Paleogene Period (23.03-66.04Ma, base in Danian stage). Data source: Total of ranges of species in this database
Plot of occurrence data:
Amphicraspedum compiled by the radiolaria@mikrotax project team viewed: 20-9-2024
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