Daughter taxa (time control age-window is: 0-800Ma)![]() | ||||
![]() | Heterosestrum sexispinatum rotundum neptune records: 1 | |||
Heterosestrum sp. neptune records: |
Catalog entries: Heterosestrum
Original description: Heliosestrinae with double medullary shell and with 6 (rarely fewer) solid regularly disposed radial spines on the margin of the disc.
Morphology:
Size:
Similar species
Geographic distribution
Paleobiology
Phylogenetic relations
Geological Range:
Last occurrence (top): at top of Chattian Stage (100% up, 23Ma, in Aquitanian 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:
Clark, B. L. & Campbell, A. S. (1945b). Radiolaria from the Kreyenhangen Formation near Los Banos, California. Geological Society of America, Memoir. 1-66. gsReferences:
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Heterosestrum compiled by the radiolaria@mikrotax project team viewed: 7-2-2023
Short stable page link: https://mikrotax.org/radiolaria/index.php?id=204274 Go to Archive.is to create a permanent copy of this page - citation notes |