Theocorythium trachelium dianae (Haeckel 1887)
Theocorythium trachelium dianae (Haeckel 1887) (Haeckel) 1887; Nigrini 1967;
Catalog entries: Theocorys dianae
Original description: Shell almost ovate, with two deep strictures. Length of the three joints = 3: 6: 8, breadth = 3: 9: 8. Cephalis subspherical, with a slender, pyramidal horn of three times the length. Thorax conical, constricted at the base. Abdomen bottle-shaped. Pores in the thorax irregular, polygonal, in the abdomen subregular, circular, quincuncially disposed.
Length of the three joints, a 30, b 60, c 80µm; breadth, a 30, b 90, c 80µm.
Remarks on original description: Haeckel listed Theocorys dianae under the subgeneric name Theocorythium, but did not include the subgeneric name the species name.
Geological Range:
Last occurrence (top): within Neogene Period (2.59-23.03Ma, top in Piacenzian stage). Data source: Lazarus et al. 2015 - "N age group"
First occurrence (base): within Neogene Period (2.59-23.03Ma, base in Aquitanian stage). Data source: Lazarus et al. 2015 - "N age group"
Plot of occurrence data:
Foreman, H. P. (1975). Radiolaria from the North Pacific, Deep Sea Drilling Project, Leg 32. Initial Reports of the Deep Sea Drilling Project. 32: 579-676. gs O 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 years 1873-1876. 18: 1-1803. gs O Morley, J. J. (1985). Radiolarians from the northwest Pacific, Deep Sea Drilling Project Leg 86. Initial Reports of the Deep Sea Drilling Project. 86: 399-422. gs Nigrini, C. A. (1967). Radiolaria in pelagic sediments from the Indian and Atlantic Oceans. Bulletin of the Scripps Institution of Oceanography. 11: 1-125. gs Sakai, T. (1980). Radiolarians from Sites 434, 435 and 436, northwest Pacific, Leg. 56, DSDP. Initial Reports of the Deep Sea Drilling Project. 56-57: 695-733. gs References:

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Theocorythium trachelium dianae compiled by the radiolaria@mikrotax project team viewed: 9-10-2026
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