Amphicraspedum murrayanum


Classification: rads_cenozoic -> Spongodiscidae -> Euchitoniidae -> Amphicraspedum -> Amphicraspedum murrayanum
Sister taxa: A. murrayanum, A. prolixum, A. sp.

Taxonomy

Citation: Amphicraspedum murrayanum Haeckel 1887
Rank: species
Basionym: Amphicraspedum murrayanum
Taxonomic discussion: Haeckel 1887

Catalog entries: Amphicraspedum murrayanum

Original description: Both arms different in size; the larger one and a half times as long and broad as the smaller. Both arms triangular, forked at the broader distal end, with two very strong, conical, divergent, straight terminal spines. Patagium broad, incomplete, with circular perimeter.

Radius of the larger arm (including the spines) 240µm, of the smaller 160µm; distance of the terminal points of the former 180µm, of the latter 90µm; diameter of the patagium 200µm.
Remarks on original description: Haeckel listed Amphicraspedum murrayanum under the subgeneric name Amphicraspedula, but did not include the subgeneric name in the species name.

Description

Biogeography and Palaeobiology

Biostratigraphic distribution

Geological Range:
Last occurrence (top): within Paleogene Period (23.03-66.04Ma, top in Chattian stage). Data source: Lazarus et al. 2015 - "P age group"
First occurrence (base): within Paleogene Period (23.03-66.04Ma, base in Danian stage). Data source: Lazarus et al. 2015 - "P age group"

Plot of occurrence data:

References:

Haeckel, E (1887). Report on the Radiolaria collected by H.M.S. Challenger during the years 1873-1876. Report on the Scientific Results of the Voyage of H.M.S. Challenger during the year 1873-1876, Zoology. 18: 1-1803. gs


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Amphicraspedum murrayanum compiled by the radiolaria@mikrotax project team viewed: 19-4-2021

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Short stable page link: https://mikrotax.org/radiolaria/index.php?id=203064 Go to Archive.is to create a permanent copy of this page - citation notes



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