Actinomma tetracanthum Stohr 1880.jpg
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Actinomma tetracanthum Stohr 1880.jpg<% linkedspecs %>
Current identification:
Original Description
Die Durchmesser der drei Gitterkugeln verhalten sich wie 1: 3: 8, und werden dieselben durch 4 innere Querbalken verbunden, die nach aussen sich in starke vierkantige, fast so lange Stacheln als der Durchmesser der Rindenschale, verlängern. Die Gitterlöcher ungefähr 1/18 des Durchmessers der Rindenschale, mit ebenso breiten Zwischenbalken.
[Diameters of the three globular shells are in the proportions 1: 3: 8. Shells linked by 4 inner radial beams which are protruding outside as stout, four-sided spines as long as the diameter of the cortical shell. Pores 1/18 of the diameter of the cortical shell with bars of the same dimensions. (Translation from German by J.P.C.)]
Diameter of cortical shell 106µm, pores 6µm, median shell 30µm, medullary shell 13µm. Length of spines 60µm, basal width 16µm.
Abundant. Distinguishing characters (rw): Es ähnelt diese Form sehr der Haliomma tetracanthum Ehr., wie sie in der Abhandlung 1872 Taf. X. 7 abgebildet ist, doch hat diese nur 2 Gitterkugeln und längere Stacheln, wie grössere Maschen.
[This form looks very similar to Haliomma tetracanthum Ehr., which is figured in his memoir of 1872, pl. X, fig. 7; but has only two globular shells, longer spines, and larger pores.]
Editors' Notes
Premature name in Stöhr, 1878 [2713:515]
Stöhr, E. (1880). Die Radiolarienfauna der Tripoli von Grotte, Provinz Girgenti in Sicilien. Palaeontographica N. F.. 6(4): 71-121. gsReferences:
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Actinomma tetracanthum compiled by the radiolaria@mikrotax project team viewed: 20-4-2021
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