radiolaria - rads_cenozoic - Acrosphaera trepanata <title>radiolaria - rads_cenozoic - Acrosphaera trepanata

Acrosphaera trepanata

Classification: rads_cenozoic -> Collosphaeridae -> Acrosphaera -> Acrosphaera trepanata
Sister taxa: A. arktios, A. australis, A. collina, A. cyrtodon, A. flammabunda, A. hamospina, A. labrata, A. lappacea, A. mercurius, A. murrayana, A. pseudarktios, A. spinosa, A. trepanata, A. sp.


Citation: Acrosphaera trepanata (Haeckel) Goll 1980
Rank: species
Basionym: Trypanosphaera trepanata
Taxonomic discussion: (Haeckel) 1887; Goll 1980

Catalog entries: Trypanosphaera trepanata

Original description: Shell regular spherical, with regular circular pores of nearly equal size, at unequal distances, one to four times as broad as the bars. Eight to ten pores on the half meridian. All the pores prolonged into short cylindrical tubuli about as long as broad, armed on the external mouth with an elegant coronal of twenty to thirty straight bristle-shaped, parallel teeth.

Diameter of the shell 120 to 140µm, of the pores 15 to 20µm; length of the tubuli 20µm.
Remarks on original description: Haeckel listed Trypanosphaera trepanata under the subgeneric name Trypanosphaerula, but did not include the subgeneric name in the species name.
[Synonymized with Acrosphaera murrayana (Haeckel) by Nigrini and Caulet, 1992, p.144]
Stratigraphic information for LM21 from Riedel, 1959, p.287.




Biogeography and Palaeobiology

Similar species

Geographic distribution


Phylogenetic relations

Biostratigraphic distribution

Geological Range:
Last occurrence (top): within Neogene Period (2.59-23.03Ma, top in Piacenzian stage). Data source: Lazarus et al. 2015 - "N age group"
First occurrence (base): within Neogene Period (2.59-23.03Ma, base in Aquitanian stage). Data source: Lazarus et al. 2015 - "N age group"

Plot of occurrence data:


Goll, M. R. (1980). Pliocene-Pleistocene radiolarians from the East Pacific Rise and the Galapagos spreading center, Deep Sea Drilling Project Leg 54. Initial Reports of the Deep Sea Drilling Project. 54: 425-453. gs V O

Haeckel, E (1887a). 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


Acrosphaera trepanata compiled by the radiolaria@mikrotax project team viewed: 30-1-2023

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