Classification: rads_cenozoic -> Theoperidae -> Theoperidae inc sed -> Lithapium
Sister taxa: Anthocorys, Anthocyrtella, Aphetocyrtis, Cassideus, Conarachnium, Cyrtolagena, D. middouri, Dictyopodium, Diplocyclas, Eurystomoskevos, Lithapium, Lithomitrissa, Lophoconus, Lophocorys, Phrenocodon, Sethochytris, Sethoconus, Stichocampe, Theocorys, Udan
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


Citation: Lithapium Haeckel 1887
Rank: genus
Basionym: Lithapium
Taxonomic discussion: Has been assigned to Theoperidae, here assigned to Actinommidae following new classification being developed by Suzuki & co-workers

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.


Biogeography and Palaeobiology

Biostratigraphic distribution

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:


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. gs

Missing or ambiguous references: ; ;


Lithapium compiled by the radiolaria@mikrotax project team viewed: 21-4-2021

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