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Radiolaria - Nassellaria - Eucyrtidiidae


Original description: Test multicyrtid, conical, with horn, usually with strictures at joints, final post-abdominal chamber closing, with large subsperical, latticed expansion, Cephalis conical or dome-shaped. Cephalis, thorax and abdomen sparsely perforate, covered by layer of microgranular silica. Post-abdominal chambers consisting of single layer of dense, small, tetragonal, pentagonal, or hexagonal pore frames. Pore frames regular to irregular in shape and size.

Original remarks:Lantus, n. gen., differs form Pseudoristolan. gen., by having a test with well-developed horn, strictures at joints, and smaller, less regular polygonal pore frames.

Etymology: Lantus is a name formed by an arbitrary combination of letters (ICZN, 1985, Appendix D, pt. VI, Recommendation 40, p. 201)

Lantus was named by Yeh (1987) [Sepkoski's age data: J Plie-u J Toar Sepkoski's reference number: 763].

It was assigned to Nassellaria by Sepkoski (2002); and to Eucyrtidiidae by O'Dogherty and Gawlick (2008).

Synonymy list
YearName and author
1987Lantus Yeh p. 90
2002Lantus Sepkoski, Jr.
2008Lantus O'Dogherty and Gawlick

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phylumRetariaCavalier-Smith 1999
classRadiolariaMüller 1858
superorderPolycystina(Ehrenberg 1867)
orderNassellariaEhrenberg 1875
superfamilyEucyrtidiaceaEhrenberg 1847
familyEucyrtidiidaeEhrenberg 1847

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

No diagnoses are available