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 ranges of the species in this database
First occurrence (base): within Neogene Period (2.59-23.03Ma, base in Aquitanian stage). Data source: Total of ranges of species in this database
Plot of occurrence data:
Spirema compiled by the radiolaria@mikrotax project team viewed: 14-9-2024
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 |