Daughter taxa (time control age-window is: 0-800Ma)![]() | ||||
| Lithapium anoectum neptune records: 138 | ||||
| Lithapium mitra neptune records: 24 | ||||
| Lithapium plegmacantha neptune records: 92 | ||||
| Lithapium sp. neptune records: 1 | ||||
Catalog entries: Lithapium
Original description: Ellipsida with simple ellipsoidal or pear-shaped shell; with a single spine only situated at one pole of the main axis.
Remarks on original description: The use of Lithapium by Riedel and Sanfilippo for a group of related theoperid species is clearly incorrect. Lithapium refers to a stylosphaerid, as noted also in Suzuki et al. 2021 - dl
Geological Range:
Last occurrence (top): at top of Paleogene Period (100% up, 23Ma, in Aquitanian stage). Data source: Total of ranges of the species in this database
First occurrence (base): within Paleogene Period (23.03-66.04Ma, base in Danian stage). Data source: Total of ranges of species in this database
Plot of occurrence data:
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Lithapium compiled by the radiolaria@mikrotax project team viewed: 6-10-2026
Short stable page link: https://mikrotax.org/radiolaria/index.php?id=204458 Go to Archive.is to create a permanent copy of this page - citation notes |