radiolaria - rads_cenozoic - Siphocampe acephala radiolaria - rads_cenozoic - Siphocampe acephala

Siphocampe acephala

Classification: rads_cenozoic -> Artostrobiidae -> Siphocampe -> Siphocampe acephala
Sister taxa: S. acephala, S. altamontensis, S. arachnea, S. bassilis, S. daseia, S. elizabethae, S. grantmackiei, S. imbricata, S. lineata, S. minuta, S. modeloensis, S. nodosaria, S. pachyderma, S. quadrata, S. septata, S. stathmeporoides, S. sp.


Citation: Siphocampe acephala (Ehrenberg 1875)
taxonomic rank: species
Taxonomic discussion: (Ehrenberg) 1875; Nigrini 1977; Takemura 1992 (ODP 122 SR) pl 6 fig 9

Catalog entries: Eucyrtidium acephalum

Original description: [Cylindrical, the apex rounded and rather 225 narrower; the segments (10, including the frontal one) very slightly constricted, narrow, flat, with approximately 11 - 12 conspicuous (opposite), parallel longitudinal lines in each segment. Length 125 µ, maximum breadth 49 µ. (Translated from Latin by E.M.R. and W.R.R.)]


Biogeography and Palaeobiology

Similar species


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:


Nigrini, C. A. (1977). Tropical Cenozoic Artostrobiidae (Radiolaria). Micropaleontology. 23(3): 241-269. gs

Takemura, A. (1992). Radiolarian Paleogene biostratigraphy in the southern Indian Ocean, Leg 120. Proceedings of the Ocean Drilling Program, Scientific Results. 120: 735-756. gs


Siphocampe acephala compiled by the radiolaria@mikrotax project team viewed: 23-4-2024

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