Citation: Cromyomma perspicuum Haeckel 1887Rank: speciesDescribed on page(s) : p.262Type specimens: pl.30, fig.8Type repository: No information givenFamily (traditional): ActinommidaeFamily (modern): Actinommidae
Original Description Radial proportion of the four shells = 1: 2.5: 6: 9. Outer cortical shell very thin walled, with thread-like bars, and irregular, polygonal pores; inner cortical shell with similar pores, but with thicker bars. Both medullary shells with regular, circular pores (the outer three times as broad as the inner). Numerous thin radial beams connect the latter with the former; other very thin and numerous beams connect the two cortical shells, and are prolonged outside into short bristle shaped spines (often longer than in the figure). Diameter of the four shells - (A) 0.18, (B) 0.12, (C) 0.05, (D) 0.02; pores of the outer shell 0.01 to 0.02; length of the spines 0.01 to 0.03. Editors' Notes Haeckel listed Cromyomma perspicuum under the subgeneric name Cromyommura , but did not include the subgeneric name in the species name.
Haeckel, E (1887a). 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 years 1873-1876. 18: 1-1803. gsO
Cromyomma perspicuum compiled by the radiolaria@mikrotax project teamviewed: 29-5-2023