CATALOG OF ORIGINAL DESCRIPTIONS: Cyclampterium milowi Riedel & Sanfilippo 1971

This page provides data from the catalog of type descriptions. The catalog is sorted alphabetically. Use the current identification link to go back to the main database.

Higher levels: rads_cat -> C -> Cyclampterium -> Cyclampterium milowi
Other pages this level: C. brachythorax, C. leptetrum, C. longiventer, C. milowi, C. neatum, C. pegetrum, C. tanythorax

Cyclampterium milowi

Citation: Cyclampterium milowi Riedel & Sanfilippo 1971
Rank: species
Type specimens: pl.3b, fig.3, pl.7....
Type repository: [No catalog number] U.S. National Museum, Washington, D.C., Riedel's collection, SIO, UCSD, U.S.A.
Described on page(s) : p.1593
Family (traditional): Theoperidae
Family (modern): Lophocyrtiidae

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Current identification:

Original Description
Shell robust, subcylindrical to....Shell robust, subcylindrical to campanulate, with the large abdomen bearing three latticed feet. Cephalis subspherical, with few small pores, bearing a short, broadly conical horn. Collar stricture usually pronounced, but less so when the wall of the cephalis is very thick. Thorax hemispherical, thick-walled, with subregular circular pores and surface smooth or slightly thorny. Abdomen subcylindrical or expanding distally, with robust bars separating large pores of variable size. The abdomen passes terminally into three irregular, coarsely latticed feet.

(Based on 30 specimens) Total length 375 to 595µm (usually approximately 475µm). Maximum breadth 235 to 375µm(usually approximately 275µm). Length of the thorax 70 to 120µm (usually approximately 90µm). Distinguishing characters (rw): This species differs from all others of the genus in possessing latticed feet. Dictyopodium eurylophos Ehrenberg (1873, p.223; 1875, pl. 19, fig. 4) and D. oxylophos Ehrenberg (1873, p.223; 1875, pl. 19, fig. 5) have latticed feet, but their entire skeleton and the meshes of their abdomen and feet are much smaller. Phylogeny (rw): The phylogenetic origin of Cyclampterium (?)milowi is obscure. C (?)pegetrum is apparently its immediate descendant.

Etymology: This species is named for E. Dean Milow, who noticed this species during his investigation of radiolarians from Leg 3 of the Deep-Sea Drilling expedition.

Editors' Notes
[Questionably synonymized with Thyrsocyrtis sp. Petrushevskaya in Petrushevskaya, 1975c, p.580]


Petrushevskaya, M. G. (1975a). Cenozoic radiolarians of the Antarctic, Leg 29, DSDP. Initial Reports of the Deep Sea Drilling Project. 29: 541-675. gs

Riedel, W. R. & Sanfilippo, A. (1971). Cenozoic Radiolaria from the western tropical Pacific, Leg 7. Initial Reports of the Deep Sea Drilling Project. 7: 1529-1666. gs


Cyclampterium milowi compiled by the radiolaria@mikrotax project team viewed: 24-2-2021

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