radiolaria - rads_cenozoic - Trissocyclidae radiolaria - rads_cenozoic - Trissocyclidae

Trissocyclidae


Classification: rads_cenozoic -> Trissocyclidae
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
Acanthodesmiidae

neptune records:

Stephaniidae

neptune records:
Neosemantis
Zygocircus

Triospyrididae

neptune records:

Trissocyclidae inc sed

neptune records:

Taxonomy

Citation: Trissocyclidae
Taxonomic rank: family
Basionym: Trissocyclidae

Catalog entries: Trissocyclidae

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Description


Published descriptions


Lazarus et al. 2021 - 

Nassellaria which possess a saggital ring ('D-ring') structure, which divides the cephalic
lattice wall (present in most species) into left and right lateral lobes. The saggital ring is formed by
the primary nassellarian spicules of median bar at the base, a straight upwards pointing apical spine,
a lateral upwards pointing vertical spine, and an curved arch joining them near the apex of the
skeleton.

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 Jurassic Period (143.10-201.36Ma, base in Hettangian stage). Data source: Total of ranges of species in this database

Plot of occurrence data:

References:


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Trissocyclidae compiled by the radiolaria@mikrotax project team viewed: 19-8-2026

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Short stable page link: https://mikrotax.org/radiolaria/index.php?id=205967 Go to Archive.is to create a permanent copy of this page - citation notes



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