- Type images:
type material: H. elegans
From Suzuki Paleotax db:
1887 Hexacromyum elegans n. sp. Haeckel p. 201, pl. 24, fig. 9
1908 Hexacromyum elegans Haeckel Haecker p. 439, text-fig. 75, 76
1912 Hexacromyum elegans Haeckel Popofsky p. 92-93, text-figs. 5-7
1937 Hexacromyum elegans Haeckel Sugano p. 63, text-fig. 19.1, 19.2
1981 Hexacromyum elegans Haeckel Takahashi & Honjo p. 148, pl. 3, fig. 15
1984 Hexacontium sp. aff. H. elegans (Haeckel) Nishimura & Yamauchi p. 30, pl. 4, figs. 1, 7, pl. 45, fig. 1
1991 Hexacromyum elegans Haeckel Takahashi p. 73, pl. 13, figs. 4, 5, 7
1993 Hexacromyum elegans Haeckel Tan p. 194-195, pl. 3, fig. 6
1998 Hexacromyum elegans Haeckel Tan p. 144-145, txt-fig. 131
1999 Hexacromyum elegans Haeckel Tan & Chen p. 160-161, text-fig. 5.67
2017 Hexacromyum elegans Haeckel Chen et al. p. 104-105, pl. 13, figs. 15, 16
Catalog entries: Hexacromyum elegans
type material: H. elegansOriginal description: Shell composed of four concentric shells, with radial proportion = 1: 2.5: 7.5: 10. First (innermost) shell with very small circular pores, second shell with larger circular pores. Third shell (inner cortical shell) with large, subregular, circular, hexagonally framed pores (eight to nine on the radius), twice as broad as the bars; from the elevated nodal-points of the hexagonal frames (between every three pores) arise thin bristle-shaped radial beams, which are united at the distal end by vaulted branches forming the delicate fourth shell. Surface smooth. Radial spines three sided pyramidal, as long as the radius, as broad at the base as the innermost shell.
Diameter of the four shells - (A) 0.02, (B) 0.05, (C) 0.15, (D) 0.2; length of the six radial spines 0.1, basal breadth 0.02. [dimensions in mm]
Remarks on original description: Good illustrated modern specimen at rad.org under Hexacontium sp. cf. H. gigantheum photo 264 by Benson. ?able image in Takahashi 1991
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"
Plot of occurrence data:
References:
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Hexacromyum elegans compiled by the radiolaria@mikrotax project team viewed: 21-6-2025
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