radiolaria - rads_cenozoic - Thecosphaera japonica

Citation: Thecosphaera japonica Nakaseko 1971

Synonyms:
1971 Thecosphaera japonica - Nakaseko p.61; pl.1, fig.3a-b
1996 Thecosphaera japonica - Motoyama p.252; pl.2, fig.3a-b

From Suzuki Paleotax db:

1972 Thecosphaera japonica n. sp. Nakaseko p. 61-62, pl. 1, fig. 3a, 3b
1973 Thecosphaera japonica Nakaseko Nakaseko & Sugano pl. 1, fig. 1a, 1b, 1c
1975 Thecosphaera japonica Nakaseko Ling p. 717, pl. 1, figs. 9, 10
1976 Thecosphaera japonica Nakaseko Nakaseko & Sugano pl. 4, fig. 9
1977 Thecosphaera japonica Nakaseko Nakaseko pl. 6, fig. 17
1979 Thecosphaera japonica Nakaseko Nagata pl. 1, figs. 2a, 2b
1980 Thecosphaera japonica Nakaseko Sakai p. 704, pl. 2, figs. 5a, 5b
1982 Thecosphaera japonica Nakaseko Nagata & Ichinoseki pl. 1, fig. 1
1982 Thecosphaera japonica Nakaseko Nagata pl. 3, fig. 4
1982 Thecosphaera japonica Nakaseko Sugano pl. 1, fig. 1
1984 Thecosphaera japonica Nakaseko Chitoku pl. 1, figs. 3a, 3b
1984 Thecosphaera japonica Nakaseko Chitoku pl. 9-1, figs. 2b, 2c
1987 Thecosphaera japonica Nakaseko Watanabe pl. 7, fig. 3
1988 Thecosphaera japonica Nakaseko Tochilina et al. p. 45, pl. 2, figs. 1a, 1b
1993 Thecosphaera japonica Nakaseko Vituchin p. 88, pl. 30, fig. 6
1996 Thecosphaera japonica Nakaseko Motoyama pl. 2, fig. 3
2017 Thecosphaera grecoi Vinassa de Regny Chen et al. p. 90, pl. 4, figs. 19, 20

Taxonomic discussion: Nakaseko 1970 p 61-62 pl 1 figs 3a-b

Original description: Description: Shell entirely globular, with rough surface and with three concentric spheres; outer shell with moderately thick wall, surface with about 16 pores across the diameter; its pores fairly small, circular, regular, in arrangement, uniform in size and shape, deeply set into the thick wall, with hexagonal frames; secondary inner shell very small, about 0.26 of the outer shell in diameter; its pores small, circular, uniform in size and shape, with rather thick bars; primary inner shell very small about 0.12 of the outer shell in diameter; its pores small subhexagonal, well-spaced, with thin bars; three concentric shells connected by many rodlike radial beams.

Description

Biogeography and Palaeobiology

Biostratigraphic distribution

Geological Range:
Last occurrence (top): Extant. Data source: Lazarus et al. 2015 - "R age group"
First occurrence (base): within Quaternary Period (0.00-2.59Ma, base in Gelasian stage). Data source: Lazarus et al. 2015 - "R age group"

References:

Motoyama, I. (1996). Late Neogene radiolarian biostratigraphy in the subarctic Northwest Pacific. Micropaleontology. 42(3): 221-262. gs

Nakaseko, K (1971a). On some species of the genus Thecosphaera from the Neogene formations, Japan. Science Reports, College of General Education, Osaka University. 20(2): 59-66. gs

Thecosphaera japonica

Taxonomy

Description

Biogeography and Palaeobiology

Biostratigraphic distribution

References:

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