radiolaria - rads_cenozoic - Artobotrys biaurita radiolaria - rads_cenozoic - Artobotrys biaurita

Artobotrys biaurita

Classification: rads_cenozoic -> Artostrobiidae -> Artobotrys -> Artobotrys biaurita
Sister taxa: A. auriculaleporis, A. biaurita, A. borealis, A. sp.


Citation: Artobotrys biaurita (Ehrenberg) Petrushevskaya and Kozlova 1979
taxonomic rank: species
Basionym: Eucyrtidium biaurita Ehrenberg 1873
1873 Eucyrtidium biauritum - Ehrenberg p. 226
1875 Eucyrtidium biauritum - Ehrenberg p. 70, pl. 10, fig. 8, 9
1887 Lophocyrtis biaurita - Haeckel p. 1411
1970 Lophocyrtis biaurita - Cita et al. p. 404, pl. 2, fig. 1-K
1973 Lophocyrtis biaurita - Foreman p. 442, pl. 8, figs. 23-26
1975 Lophocyrtis biaurita - Chen pl. 3, fig. 2
Taxonomic discussion: (Ehrenberg) 1873 p.226; 1875 p.70 pl.10 figs.7&8 as Eucyrtidium; Petrushevskaya and Kozlova 1979 p.136

Catalog entries: Eucyrtidium biauritum

Original description: (23-articul.), capitulo parum discreto, aculeis crassis lateralibus duobus armato laevi aut basi subacuto. Art II ovato-oblongus poris raris parvis perforatus. Art III angustior cylindricus truncatus imperforatus. Ne pro Lithopera habeatur.
Translated description: [2 - 3-segmented, the cephalis not markedly distinct, armed with 2 thick; lateral spines, the cephalis smooth or subacute at the base. Second segment ovate-oblong, perforated by sparse, small pores. Third segment narrower, cylindrical, truncate, imperforate. It should not be regarded as a Lithopera. (Translated from Latin by E.M.R. and W.R.R.)]

Remarks on original description: [New name Lophocyrtis biaurita (Ehrenberg) Haeckel, 1887a]


Published descriptions

Haeckel 1887 - Eucyrtidium biauritum

Shell smooth, with two distinct strictures. Length of the three joints= 1:6:3, breadth= 2:5:4. Cephalis small, hemispherical, hyaline, with two large, divergent, curved horns of three times the length. Thorax ovate, with few small, widely scattered pores. Abdomen cylindrical, without pores.

Dimensions: Length of the three joints, a 0.015, b 0.06, c 0.03; breadth, a 0.02, b 0.05, c 0.04.

Biogeography and Palaeobiology

Biostratigraphic distribution

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

Haeckel, E (1887). Report on the Radiolaria collected by H.M.S. Challenger during the years 1873-1876. Report on the Scientific Results of the Voyage of H.M.S. Challenger during the years 1873-1876. 18: 1-1803. gs O

Petrushevskaya, M. G. & Kozlova, G. E. (1979). Opisanie rodov i vidov radiolyariy [Description of the radiolarian genera and species.]. In, Sterlkov, A. A. & Petrushevskaya, M. G. (eds) Istoriya mikroplanktona Norvezhskogo Morya [The history of the microplankton of the Norwegian Sea (based on Deep Sea Drilling materials)]. Issledovanie Faunyi Morey (Akademii Nauk SSSR) Leningrad . 23(31): 86-157. gs O

Missing or ambiguous references: Chen 1975; Ehrenberg 1873; Ehrenberg 1875; Foreman 1973;


Artobotrys biaurita compiled by the radiolaria@mikrotax project team viewed: 2-3-2024

Taxon Search:
Advanced Search

Short stable page link: Go to to create a permanent copy of this page - citation notes

Add Comment

* Required information
Captcha Image
Powered by Commentics


No comments yet. Be the first!