radiolaria - rads_cat - Sethocyrtis principii principii

CATALOG OF ORIGINAL DESCRIPTIONS: Sethocyrtis principii principii Clark & Campbell 1942

This page provides data from the catalog of type descriptions. The catalog is sorted alphabetically. Use the current identification link to go back to the main database.

Higher levels: rads_cat -> S -> Sethocyrtis -> Sethocyrtis principii principii
Other pages this level: << < S. expositus, S. japonica, S. laguncularis, S. menelai, S. mica, S. minimus, S. mitrus, S. multiplicatus, S. ovalis, S. oxycephalis, S. parva, S. parvissimus, S. pirum, S. porrectus, S. principii longispina, S. principii principii, S. principii valgrandensis, S. pyrum, S. rara, S. simus, S. sinitzini, S. tamdiensis, S. tintinabulum, S. vialovi

Sethocyrtis principii principii

Citation: Sethocyrtis principii principii Clark & Campbell 1942
Rank: sub-species
Described on page(s) : p.75
Type specimens: pl.7, figs.5,6
Type repository: University of California, Museum of Paleontology, San Francisco
Family (traditional): Theoperidae
Family (modern): Theopilidae

Current identification:

Original Description

Shell small, generally similar to S. principii longispina n. subsp. save in the character of the apical horn which has a length of 0.06 as against 0.4 total length in the latter.

Length of shell, 130µm; of horn, 15µm; of cephalis, 23.2µm; diameter of widest part of thorax, 110µm; of pores, 10µm. Distinguishing characters (rw): Sethocyrtis principii principii n. subsp. differs from S. principii longispina n. subsp. mainly in the character of the apical horn.




Extra details from original publication

Editors' Notes


Clark, B. L. & Campbell, A. S. (1942). Eocene radiolarian faunas from the Mt. Diablo area, California. Geological Society of America, Special Papers. 39: 1-112. gs


Sethocyrtis principii principii compiled by the radiolaria@mikrotax project team viewed: 6-7-2022

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