- Type images:
x: E. asperum
From Suzuki Paleotax db:
1874 Eucyrtidium asperum n. sp. Ehrenberg p. 226
1876 Eucyrtidium asperum Ehrenberg Ehrenberg p. 70-71, pl. 8, fig. 15
1887 Theocyrtis (Theocorusca) aspera (Ehrenberg) Haeckel p. 1408
1972 Calocyclas asperum (Ehrenberg) Petrushevskaya & Kozlova p. 548, pl. 28, figs. 16-19
1973 Calocyclas asperum (Ehrenberg) Petrushevskaya fig. 3.34
1978 Calocyclas asperum (Ehrenberg) Dzinoridze et al. pl. 28, fig. 15
1978 Calocyclas asperum Ehrenberg [sic] Dzinoridze et al. pl. 34, fig. 5
1979 Calocyclas aff. asperum (Ehrenberg) Kozlova & Petrushevskaya fig. 389
1979 Calocyclas asperum (Ehrenberg) Kozlova & Petrushevskaya p. 144, figs. 505-508
1985 Eucyrtidium asperum Ehrenberg Tochilina pl. 1, fig. 10
1991 Calocyclas asperum (Ehrenberg) Caulet pl. 4, fig. 8
1998 Lophocyrtis (Apoplanius) aspera (Ehrenberg) [sensu emend.] Sanfilippo & Caulet p. 14-15, pl. 3A, figs. 5-10; pl. 3B, figs. 1, 2, 5-9; pl. 6, figs. 6-8
1999 Calocyclas asperum (Ehrenberg) Kozlova p. 153, pl. 35, fig. 6; pl. 46, fig. 10
1999 Calocyclas sp. cf. C. asperum (Ehrenberg) Kozlova pl. 28, fig. 14
1999 Lophocyrtis (Apoplanius) aspera (Ehrenberg) O'Connor p. 32, pl. 9, fig. 5
2009 Eucyrtidium asperum Ehrenberg [Ehrenberg collection] Ogane et al. pl. 89, fig. 3a-g
Catalog entries: Eucyrtidium asperum
x: E. asperumOriginal description: [3-segmented, rough, with small globose cephalis obscurely porous, armed with a short stub of a small spine. Second segment strongly swollen, globose, subcampanulate, with pores in quincuncial rows. Third segment a little narrower, cylindrical, irregularly truncate, with variable pores. Total length 140 µ, of the cephalis 15 µ, of the second segment 58 µ, of the third segment 64 µ. Approximately 2 larger pores in 23 µ. (Translated from Latin by E.M.R. and W.R.R.)]
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:
Ehrenberg, C. G. (1874b). Grössere Felsproben des Polycystinen-Mergels von Barbados mit weiteren Erläuterungen. Monatsberichte der Koniglichen Preussische Akademie der Wissenschaften zu Berlin. 1873: 213-263. gs Sanfilippo, A. & Caulet, J. (1998). Taxonomy and evolution of Paleogene Antarctic and tropical Lophocyrtid radiolarians. Micropaleontology. 44(1): 1-43. gsReferences:
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Lophocyrtis aspera compiled by the radiolaria@mikrotax project team viewed: 14-6-2026
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