radiolaria - rads_cenozoic - Calocycletta costata

Citation: Calocycletta costata (Riedel) Riedel&Sanfilippo 1970

Synonyms:
1959 Calocyclas costata - Riedel p 296, Plate 2, figure 9
1970 Calocycletta costata - Riedel and Sanfilippo Plate 14, figure 12

From Suzuki Paleotax db:

1959 Calocyclas costata n. sp. Riedel p. 296, 298, pl. 2, fig. 9
1970 Calocycletta costata (Riedel) Riedel & Sanfilippo p. 535, pl. 14, fig. 12
1971 Calocyclas costata (Riedel) Moore p. 744, pl. 10, fig. 8
1971 Calocycletta costata (Riedel) Kling p. 1088, pl. 5, fig. 8
1971 Calocycletta costata (Riedel) Riedel & Sanfilippo p. 1598, pl. 2h, figs. 12-14
1972 Calocycletta costata (Riedel) Goll p. 957, pl. 14, fig. 2
1972 Calocycletta costata (Riedel) Johnson & Parker pl. 3, fig. 4
1972 Calocycletta costata (Riedel) Moore p. 147-148, pl. 1, fig. 8
1972 Calocycletta costata (Riedel) Petrushevskaya & Kozlova p. 544, pl. 35, fig. 17
1973 Calocycletta costata (Riedel) Sanfilippo et al. p. 226, pl. 6, fig. 10
1974 Calocycletta costata (Riedel) Johnson p. 550, pl. 8, fig. 9
1974 Calocycletta costata (Riedel) Kruglikova pl. 3, fig. 7
1975 Calocycletta costata (Riedel) Ling p. 730, pl. 12, figs. 10, 11
1977 Calocycletta costata (Riedel) Riedel & Sanfilippo pl. 17, fig. 2
1978 Calocycletta costata (Riedel) Kruglikova pl. 23, figs. 7-9
1978 Calocycletta costata (Riedel) Riedel & Sanfilippo p. 66, pl. 3, fig. 9
1978 Calocycletta costata (Riedel) Theyer et al. pl. 1, fig. 9
1980 Calocycletta costata (Riedel) Sakai p. 711, pl. 10, figs. 6a, 6b
1981 Calocycletta costata (Riedel) [ultra thin section] Hurd et al. pl. 2, fig. B
1981 Calocycletta costata (Riedel) Wolfart p. 497, pl. 4, fig. 6
1982 Calocycletta costata (Riedel) Nagata pl. 4, fig. 7
1982 Calocycletta costata (Riedel) Riedel & Sanfilippo pl. 2, fig. 1
1982 Calocycletta costata (Riedel) Sakai p. 196, pl. 98, fig. 914
1984 Calocycletta costata (Riedel) Renz pl. 1, fig. 9
1984 Calocycletta costata Riedel [sic] Nigrini & Lombari N155-N156, pl. 28, fig. 2
1985 Calocycletta costata (Riedel) Sanfilippo et al. p. 691-692, figs. 28.3a, 28.3b
1986 Calocycletta costata (Riedel) Levyikina p. 73, pl. 7, figs. 6, 7
1987 Calocycletta costata (Riedel) Nishimura p. 721, pl. 5, fig. 15
1988 Calocycletta costata (Riedel) Funayama pl. 3, fig. 11
1988 Calocycletta costata (Riedel) Palmer pl. 1, fig. 1
1988 Calocycletta costata Riedel [sic] Palmer pl. 1, fig. 5
1992 Calocycletta (Calocyclissima) costata (Riedel) Sanfilippo & Riedel pl. 5, fig. 1
1992 Calocycletta (Calocyclissima) costata (Riedel) Sugiyama & Furutani p. 206, pl. 14, fig. 11, pl. 19, fig. 9
1992 Calocycletta costata (Riedel) Wang & Yang p. 103, pl. 1, fgs. 9-11
1993 Calocycletta costata (Riedel) Sugiyama fig. 3.5
1999 Calocycletta costata (Riedel) Tsoy & Shastina p. 60, pl. 28, fig. 1

Original description: Cephalis ovate, lobed, with sparse subcircular to circular pores and bearing a stout, conical apical horn. Thorax subspherical, with pores circular, hexagonally arranged and with a pronounced tendency to longitudinal alignment, the longitudinal rows separated by pronounced costae. No lumbar stricture externally. Abdomen subcylindrical or tapering distally, narrower than the widest part of the thorax. Abdominal pores subcircular or circular, arranged hexagonally with apparent longitudinal alignment (these longitudinal lines are continuous with those of the thorax) and often with longitudinal ridges separating pore rows. Terminal feet eleven to eighteen in number, lamellar, usually truncate, parallel or slightly convergent, broader than the spaces between them, usually situated opposite alternate rows of abdominal pores.
Remarks on original description: Although rare specimens appear to be transitional between Calocyclas virginis and Calocyclas costata, it is now considered advisable to recognize the two as distinct species. Transitional forms are to be expected if Calocyclas costata arose from Calocyclas virginis, as appears to have been the case.

Description

Biogeography and Palaeobiology

Biostratigraphic distribution

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"

References:

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. & Sanfilippo, A. (1978). Stratigraphy and evolution of tropical Cenozoic radiolarians. Micropaleontology. 24(1): 61-96. gs

Riedel, W. R. (1959a). Oligocene and Lower Miocene Radiolaria in tropical Pacific sediments. Micropaleontology. 5(3): 285-302. gs

Calocycletta costata

Taxonomy

Description

Biogeography and Palaeobiology

Biostratigraphic distribution

References: