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Crubus chengi

Protozoa - Nassellaria - Crubidae

Discussion

Origianl description: Test wide, subcylindrical, usually with eight to ten post-abdominal chambers Cephalis conical, with short massive rudimentary horn and covered with layer of microgranular silica. Thorax to second post-abdominal chambers covered by layer of massive, irregular polygonal pore frames. Costae moderately thick, about ten to twelve visible laterally.

Original remarks: Crubus chengi Yeh, n. sp.,differs from C. robustus, n. sp., by having a long, massive horn, and having a test with apical port ion more pointed in nature. Crubus chengi, n. sp., differs from C. firmus, n. sp., by having a more cylindrical test with more massive horn on a smaller cephalis.

Etymology: This species is named for Dr. Yen-Nien Cheng for his help on this project.

Taxonomy
Crubus chengi was named by Yeh (1987). Its type specimen is NMNS (000095) and is a 3D body fossil. Its type locality is Suplee-Izee area, OR-600M, which is in a Toarcian marine tuff/limestone in the Hyde Formation of Oregon.

Synonyms
Synonymy list
YearName and author
1987Crubus chengi Yeh p. 69 figs. Pl. 18, figs. 13-15, 19-20, 24; Pl. 19, figs. 7, 15
1987Crubus robustus Yeh p. 70 figs. Pl. 3, fig. 18; Pl. 18, figs. 9-10, 22

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RankNameAuthor
—Life
—Eukaryota()
classProtozoaGoldfuss 1820
subphylumSarcodinaSchmarda 1871
classReticulareaLankester 1885
subclassRadiolaria(Müller 1858)
RankNameAuthor
superorderPolycystina(Ehrenberg 1838)
orderNassellariaEhrenberg 1875
familyCrubidae
genusCrubus
specieschengi

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.

†Crubus chengi Yeh 1987
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Invalid names: Crubus robustus Yeh 1987 [synonym]
Diagnosis
No diagnoses are available