Tympanomma binoctonum

Classification: rads_cenozoic -> Trissocyclidae -> Acanthodesmiidae -> Tympanomma -> Tympanomma binoctonum
Sister taxa: T. binoctonum, T. sp.


Citation: Tympanomma binoctonum Haeckel 1887
Rank: species
Basionym: Tympanomma binoctonum
Taxonomic discussion: (Haeckel) 1887; Petrushevskaya and Kozlova, 1972

Catalog entries: Tympanidium binoctonum

Original description: Shell with sixteen gates; the four lateral gates double, bisected by the lateral parts of an incomplete equatorial ring. Basal gates nearly rectangular, of the same breadth as the pentagonal mitral gates, but twice as long. Equatorial outline of the shell (seen in fig. 18 from the apical pole) octagonal. All rods of the shell thin, smooth.

Transverse axis of the shell 0.1, sagittal axis 0.06.
Remarks on original description: Haeckel listed Tympanidium binoctonum under the subgeneric name Tympanomma, but did not include the subgeneric name in the species name.


Biogeography and Palaeobiology

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:


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 year 1873-1876, Zoology. 18: 1-1803. gs

Petrushevskaya, M. G. & Kozlova, G. E. (1972). Radiolaria: Leg 14, Deep Sea Drilling Project. Initial Reports of the Deep Sea Drilling Project. 14: 459-648. gs


Tympanomma binoctonum compiled by the radiolaria@mikrotax project team viewed: 31-10-2020

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Short stable page link: http://mikrotax.org/radiolaria/index.php?id=205984 Go to Archive.is to create a permanent copy of this page - citation notes

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