rad_org Pterocanium prismatium img1280.jpg
rad_org Pterocanium prismatium img1370.jpg
rad_org Pterocanium prismatium img1280.jpg
rad_org Pterocanium prismatium img1370.jpg
1957 Pterocanium prismatium - Riedel p.87, pl. 4, figs. 4, 5
1980 Pterocanium prismatium - Sakai p. 711, pl.8, figs. 15a, 15b
1985 Pterocanium prismatium - Morley pl. 7, figs. 3A, 3B
From Suzuki Paleotax db:
1957 Pterocanium prismatium n. sp. Riedel p. 87-88, pl. 3, figs. 4, 5
1971 Pterocanium prismatium Riedel Kobayashi et al. fig. 5.1
1971 Pterocanium prismatium Riedel Nigrini p. 447, pl. 34.1, fig. 4
1971 Pterocanium prismatium Riedel Riedel & Sanfilippo p. 1595, pl. 8, fig. 1
1972 Pterocanium (?) sp. aff. prismatium Riedel Petrushevskaya & Kozlova p. 553, pl. 27, figs. 10, 11
1972 Pterocanium prismatium Riedel Goll p. 960, pl. 33, fig. 1
1972 Pterocanium prismatium Riedel Petrushevskaya fig. 2.9
1973 Pterocanium sp. aff. P. prismatium Riedel Petrushevskaya fig. 3.30
1974 Pterocanium prismatium Riedel Johnson p. 549, pl. 8, fig. 11
1974 Pterocanium prismatium Riedel Kruglikova pl. 1, figs. 15-17
1975 Pterocanium prismatium Riedel Foreman p. 621, pl. 9, fig. 9
1975 Pterocanium prismatium Riedel Holdsworth p. 530
1975 Pterocanium prismatium Riedel Johnson & Knoll pl. 1, fig. 9
1975 Pterocanium prismatium Riedel Kellogg & Hays fig. 1b
1977 Pterocanium prismatium Riedel Casey & McMillen pl. 2, fig. 1
1977 Pterocanium prismatium Riedel Riedel & Sanfilippo pl. 21, fig. 5
1978 Pterocanium prismatium Riedel Riedel & Sanfilippo p. 72, pl. 9, fig. 1
1978 Pterocanium prismatium Riedel Theyer et al. pl. 1, fig. 1
1979 Pterocanium prismatium Riedel Caulet p. 133-134, pl. 3, fig. 7
1979 Pterocanium prismatium Riedel Takayanagi et al. pl. 1, fig. 13, pl. 2, fig. 5
1980 Pterocanium prismatium Riedel Goll p. 437, pl. 3, fig. 4
1980 Pterocanium prismatium Riedel Sakai p. 711, pl. 8, figs. 15a, 15b
1982 Pterocanium prismatium Riedel Nagata pl. 4, fig. 14
1982 Pterocanium prismatium Riedel Sakai p. 196, pl. 98, fig. 910
1984 Pterocanium prismatium Riedel Nigrini & Lombari N125-N126, pl. 25, fig. 2
1985 Pterocanium prismatium Riedel Lazarus et al. p. 200, fig. 17.1-17.4
1985 Pterocanium prismatium Riedel Morley p. 412, pl. 7, figs. 3a, 3b
1985 Pterocanium prismatium Riedel Sanfilippo et al. p. 679-680, figs. 21.1a, 21.1b
1986 Pterocanium prismatium Riedel Levyikina p. 89, pl. 12, figs. 3, 4
1986 Pterocanium prismatium Riedel Riedel & Sanfilippo pl. 1, fig. 1
1986 Pterocanium prismatium Riedel Taketani et al. pl. 4, figs. 9a, 9b
1989 Pterocanium prismatium Riedel Alexandrovich pl. 4, fig. 4
1994 Pterocanium prismatium Riedel Haslett p. 135, pl. 2, fig. 16
Catalog entries: Pterocanium prismatium
type material: P. prismatiumOriginal description: Cephalis subspherical, pitted, bearing a sharply pointed, cylindro-conical apical horn with a length of approximately 1.5 times cephalic diameter, and sometimes smaller accessory spines. Thorax having overall shape of a triangular prism surmounted by an obtuse triangular pyramid, terminating at pronounced collar stricture: this general shape often modified by shallow concavity of the prismatic faces, and slight swellings between the proximal parts of the 3 thoracic ribs. In relation to the general thorax surface, the thoracic ribs are usually depressed in furrows proximally, and raised on ridges distally. Thoracic pores subpolygonal to almost circular, separated by thin bars, arranged approximately hexagonally in apparent longitudinal rows. Upper part of thorax usually bears small spines: these spines often concentrated on the proximal swellings, and thorns often occur on the ridged part of the thoracic ribs. Opening at base of thorax somewhat constricted. Feet three-bladed, proximally fenestrated, straight or slightly curved, usually almost parallel or somewhat divergent, usually shorter than thorax. Abdomen, when present, short, delicate, with irregular meshes smaller than those of thorax, usually entirely separate from and surrounded by the feet.
Geological Range:
Last occurrence (top): within Paleogene Period (23.03-66.04Ma, top in Chattian stage). Data source: Lazarus et al. 2015 - "P age group"
First occurrence (base): within Paleogene Period (23.03-66.04Ma, base in Danian stage). Data source: Lazarus et al. 2015 - "P age group"
Plot of occurrence data:
Alexandrovich, J. M. (1989). Radiolarian biostratigraphy of ODP Leg 111, Site 677, eastern equatorial Pacific, late Miocene through Pleistocene. Proceedings of the Ocean Drilling Program, Scientific Results. 111: 245-262. gs 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 Riedel, W. R. & Sanfilippo, A. (1970). Radiolaria, Leg. 4 DSDP. Initial Reports of the Deep Sea Drilling Project. 4: 503-575. gs Riedel, W. R. (1957b). Radiolaria: a preliminary stratigraphy. Reports of the Swedish Deep-Sea Expedition, 1947-1948. 6(3): 59-96. 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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Pterocanium prismatium compiled by the radiolaria@mikrotax project team viewed: 22-7-2026
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