Zonidium octotholium Haeckel 1887.jpg
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Zonidium octotholium Haeckel 1887.jpg<% linkedspecs %>
Current identification:
Original Description
Cortical shell nearly octangular, with spiny surface; twenty long and stout radial spines between numerous smaller spines; eight wing-spines opposite in pairs in two crossed diagonal planes (as in the preceding species); twelve other strong spines in the lateral plane (four longer opposite in pairs on the poles of the principal and transverse axes, eight others smaller, alternating between these and the diagonal spines). Sagittal constriction twice as long as the hexagonal medullary shell. Four median cupolas somewhat smaller than the four lateral cupolas.
Length of the cortical shell 0.18, breadth 0.15; length of the medullary shell 0.07, breadth 0.05.
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. gsReferences:
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Zonidium octotholium compiled by the radiolaria@mikrotax project team viewed: 18-4-2021
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