radiolaria - rads_cenozoic - Theoperidae radiolaria - rads_cenozoic - Theoperidae

Theoperidae


Classification: rads_cenozoic -> Theoperidae
Sister taxa: Actinommidae, Coccodiscidae, Heliodiscidae, Litheliidae, Orosphaeridae, Pyloniidae, Spongodiscidae, Tholoniidae ⟩⟨ Amphipyndacidae, Archaeodictyomitridae, Artostrobiidae, Cannobotryidae, Carpocaniidae, Plagiacanthidae, Pterocorythidae, Theoperidae, Trissocyclidae ⟩⟨ Collophidiidae, Collosphaeridae, Sphaerozoidae ⟩⟨ incertae sedis, hidden
Daughter taxa (time control age-window is: 0-800Ma)Granddaughter taxa
Acropyramiidae

neptune records:
Artostrobus
Bathropyramis
Cinclopyramis
Cornutella
Litharachnium
Peripyramis
Plectopyramis

Anthocyrtidae

neptune records:
Anthocyrtella
Clathrocyclas

Bekomidae

neptune records:
Bekoma
Bekomiforma
Clathropyrgus
Orbula

Cycladophoridae

neptune records:
Cycladophora

Eucyrtidiidae

neptune records:

Lophocyrtiidae

neptune records:
Clinorhabdus
Lophocyrtis
Pterocyrtidium

Lychnocaniidae

neptune records:
Dictyophimus
Lamprotripus
Lithochytris
Lychnocanium
Lychnocanoma
Pleuropodium
Pterocanium
Stichopilidium

Stichopiliidae

neptune records:
Artopilium
Dictyocodon
Stichopilium

Theocotylidae

neptune records:
Calocycloma
Lamptonium
Pterocodon
Theocotyle
Theocotylissa
Thyrsocyrtis

Theoperidae (ss)

neptune records:
Eusyringium
Pterosyringium
Rhopalocanium
Valkyria

Theoperidae inc sed

neptune records:

Taxonomy

Citation: Theoperidae
Taxonomic rank: family
Basionym: Theoperidae

Catalog entries: Theoperidae

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Description


Published descriptions


Lazarus et al. 2021 - 

Nassellarians with a simple (neither divided or lobed), usually relatively small cephalis
and at least one, generally several post cephalic segments, usually also with internal septa at
segment sutures.

Biogeography and Palaeobiology

Biostratigraphic distribution

Geological Range:
Last occurrence (top): Extant. Data source: Total of ranges of the species in this database
First occurrence (base): within Paleogene Period (23.03-66.04Ma, base in Danian stage). Data source: Total of ranges of species in this database

Plot of occurrence data:

References:


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Theoperidae compiled by the radiolaria@mikrotax project team viewed: 6-6-2026

Taxon Search:
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Short stable page link: https://mikrotax.org/radiolaria/index.php?id=205843 Go to Archive.is to create a permanent copy of this page - citation notes



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