From Suzuki Paleotax db:
1942 Heliodiscus (Heliodiscetta) hexasteriscus n. sp. Clark & Campbell p. 40, pl. 3, figs. 14, 15
1945 Heliodiscus (Heliodiscetta) hexastericus Clark et Campbell Clark & Campbell p. 22, pl. 5, fig. 3
1972 Heliodiscus hexasteriscus Clark et Campbell Petrushevskaya & Kozlova p. 523, pl. 13, fig. 4
1976 Heliodiscus sp. aff. H. hexasteriscus Clark et Campbell (?) Bjørklund pl. 20, figs. 12, 13
1978 Heliodiscus hexasteriscus Clark et Campbell Dzinoridze et al. pl. 13, fig. 1, 5
1978 Heliodiscus hexasteriscus Clark et Campbell Dzinoridze et al. pl. 23, fig. 6
1990 Heliodiscus hexasteriscus Clark & Campbell Kozlova pl. 11, figs. 3, 9
1993 Heliodiscus aff. hexasteriscus Clark & Campbell Vituchin pl. 3, fig. 6
1999 Heliodiscus hexasteriscus Clark & Campbell Kozlova p. 83-84, pl. 24, fig. 1
1999 Heliodiscus sp. cf. H. hexasteriscus Clark & Campbell Kozlova pl. 17, fig. 6
1999 Heliodiscus sp. cf. H. hexasteriscus Clark & Campbell Kozlova pl. 25, fig. 14
Catalog entries: Heliodiscus hexasteriscus
Original description: Shell like a sunburst with six rays of moderate length, equal in size except as broken, about half the diameter of the cortical shell in length, strongly four-angled in the lower three-fourths and rounded distally; tips bluntly pointed, the bases flaring to the disc; hyaline, and with short, backwardly directed processes or hooklets in the proximal part, these evidently the places of attachment of contractile protoplasmic myonemes; cortical shell lenticular, biconvex, with small, regular, equal circular pores, the pores with thin, raised rims or collars and with very minute, rarely bifurcate, mostly simple, sepaloid spinules, about twenty pores or more in a radius, and from five to nine around the edge on an interradius; cavity of the pores cylindrical, asymmetrically pointed toward the center of the disc, wall thick; medullary shell obscured by the extreme density of the cortical wall.
Remarks on original description: [The authors here list Heliodiscus hexasteriscus under the subgeneric name Heliodiscetta and include the subgeneric name in the species name.
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:
Heliodiscus hexasteriscus compiled by the radiolaria@mikrotax project team viewed: 10-12-2024
Short stable page link: https://mikrotax.org/radiolaria/index.php?id=204253 Go to Archive.is to create a permanent copy of this page - citation notes |