Daughter taxa (time control age-window is: 0-800Ma)![]() | Granddaughter taxa | ||||
![]() | Enneaphormis neptune records: | ||||
![]() | Sethophormis neptune records: | ||||
![]() | Tetraphormis neptune records: | ||||
![]() | ![]() | Velicucullus neptune records: 268 |
Catalog entries: Sethophormidae [no catalog entry yet]
Distinguishing features: Wide conical or nearly flat 2 segmented forms with relatively large but inconspicuous highly flattened cephalis.
De Wever etal. 2001: Usually wide conical to flat dicyrtid nassellarians with relatively large cephalis, sometimes reduced to some arches. Basal structure with MB, a shart A, and well developed D and L spines, and arches AD and AL. Spines V and l missing.
Morphology:
Geological Range:
Last occurrence (top): at top of Chattian Stage (100% up, 23Ma, in Chattian stage). Data source: Total of range of species in this database
First occurrence (base): at base of Danian Stage (0% up, 66Ma, in Danian stage). Data source: Total of range of species in this database
Plot of occurrence data:
![]() |
Sethophormididae compiled by the radiolaria@mikrotax project team viewed: 28-2-2021
Short stable page link: https://mikrotax.org/radiolaria/index.php?id=206154 Go to Archive.is to create a permanent copy of this page - citation notes |