radiolaria - rads_cat - Sethocyrtis principii longispina

CATALOG OF ORIGINAL DESCRIPTIONS: Sethocyrtis principii longispina 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 longispina

Other pages this level: << < S. elegans, 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 longispina Clark and Campbell 1942.jpg

Sethocyrtis principii longispina

Citation: Sethocyrtis principii longispina Clark & Campbell 1942

Rank: sub-species

Type specimens: pl.7, fig.13

Type repository: University of California, Museum of Paleontology, San Francisco

Described on page(s) : p.76

Family (traditional): Theoperidae

Family (modern): Theopilidae

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Current identification:

Original Description
Shell small, similar in practically all shell characters to S. principii principii n. subsp. save in the character of the apical horn; apical horn greatly elongated, 0.4 total length, conical (12°), tip bluntly pointed.

Length 167µm; of apical horn, 67.0µm; of cephalis, 24.5µm; diameter of widest part of thorax, 83.5µm; of pores, 10.0µm. Distinguishing characters (rw): This subspecies is very close to S. principii principii n. subsp. and differs from it in the character of the apical horn which is 0.4 total length as against 0.06 total length. In other respects the two subspecies are identical and are separated in this report mainly upon the character of the horn.

Etymology: Latin longus + spina -ae = long spine

References:

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 longispina compiled by the radiolaria@mikrotax project team viewed: 15-5-2021

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Short stable page link: https://mikrotax.org/radiolaria/index.php?id=252370 Go to Archive.is to create a permanent copy of this page - citation notes

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