Daughter taxa (time control age-window is: 0-800Ma)![]() | ||||
Spirema circularis neptune records: | ||||
![]() | Spirema melonia neptune records: | |||
Spirema sp. neptune records: 40 |
Catalog entries: Spirema
Original description: Lithelida with simple, spherical or subspherical, medullary shell, and lentelliptical or subspherical, spirally constructed cortical shell; surface smooth or thorny, without radial spines.
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:
Haeckel, E (1887). Report on the Radiolaria collected by H.M.S. Challenger during the years 1873-1876. Report on the Scientific Results of the Voyage of H.M.S. Challenger during the year 1873-1876, Zoology. 18: 1-1803. gsReferences:
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Spirema compiled by the radiolaria@mikrotax project team viewed: 28-2-2021
Short stable page link: https://mikrotax.org/radiolaria/index.php?id=205443 Go to Archive.is to create a permanent copy of this page - citation notes |