Classification: rads_cenozoic -> Plagiacanthidae -> Sethoperidae
Sister taxa: Lophophaenidae, Plagiacanthidae (ss), Plagiacanthidae inc sed, Sethoperidae, Sethophormididae, Theopiliidae,
Daughter taxa: (blue => in age window 0-800Ma) Granddaughter taxa

neptune records:

neptune records:

neptune records: 6

neptune records:

neptune records: 186

neptune records: 1

neptune records:

neptune records:

neptune records: 264

neptune records: 51

neptune records: 44

neptune records: 18

neptune records: 1

neptune records:


Citation: Haeckel, 1881
emend. Petrushevskay, 1971
Rank: family (new classif)
Type species: Sethopera Haeckel 1881
Notes & discussion: This family is part of the revised classification system being developed by Prof. Suzuki and colleagues

Catalog entries: Sethoperidae [no catalog entry yet]


Distinguishing features: One or two segmented forms with external spines usually connected by panels or arches of lattice wall.

Morphology remarks:

De Wever et al. 2001: Dicyrtid nassellarians with well developed spines A, D and L and arches AD and AL. Usually spines D and L may form ribs, or wings, and the space between them may be fenestrated, or D, L and A may be interconnected by lattice panels.

Biogeography and Palaeobiology



Phylogenetic relations:

Similar species:

Biostratigraphic distribution

Geological Range:
Last occurrence (top): Extant Data source: Total of range of species in this database
First occurrence (base): at base of Aquitanian Stage (0% up, 23Ma, in Aquitanian stage). Data source: Total of range of species in this database

Plot of occurrence data:



Sethoperidae compiled by the radiolaria@mikrotax project team viewed: 22-9-2020

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