- Type images:
type image: C. circumtextum
From Suzuki Paleotax db:
1887 Cromyomma (Cromyommura) circumtextum n. sp. Haeckel p. 262-263, pl. 30, fig. 4
1996 Cromyomma circumtextum Haeckel Chen & Tan p. 174-175, pl. 9, fig. 7, pl. 40, figs. 6, 9
2017 Cromyomma circumtextum Haeckel Chen et al. p. 118-119, pl. 23, figs. 7-12; pl. 24, figs. 1-8
Catalog entries: Cromyomma circumtextum
type image: C. circumtextumOriginal description: Radial proportion of the four spheres = 1: 2: 5: 7. Outer cortical shell very delicate and thin walled, with thread-like bars and large, irregular, polygonal meshes (larger than the innermost shell); inner cortical shell also with irregular, polygonal pores, three to nine times as broad as the thick bars. Both medullary shells with subregular, circular pores (the outer three times as broad as the inner). Radial spines twelve to twenty, three-sided prismatic, stout, piercing the three outer shells, inserted on the innermost; their outer part pyramidal, half as long as the radius.
Remarks on original description: Haeckel listed Cromyomma circumtextum under the subgeneric name Cromyommura, but did not include the subgeneric name in the species name.[comment from RadWorld database]
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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Cromyomma circumtextum compiled by the radiolaria@mikrotax project team viewed: 21-6-2025
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