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Noritus tenuis

Protozoa - Nassellaria - Bagotidae

Discussion

Original description: Test relatively short, spindle shaped, with five to six post-abdominal chambers. Cephatis conical with short rudimentary horn. Cephalis and thorax sparsely perforated, covered with layer of microgranular silica. Abdonmen and post-abdominal chambers trapezoidal to rectangular in outline, consisting of irregular polygonal pore frames with small pores apically and distally. Pore frames tending in linear alignment and with poorly developed short costae.

Original remarks: Noritus tenuis Yeh n. sp. differs from N. Pauxillus, n. sp. by having a shorter horn and by having a test with pore frames more uniform in size.

Etymology: Tenuis (Latin, adj.) thin.

Taxonomy
Noritus tenuis was named by Yeh (1987). Its type specimen is NMNS (000069) and is a 3D body fossil. Its type locality is Suplee-Izee area, OR-589D, which is in a Toarcian marine mudstone/limestone in the Snowshoe Formation of Oregon.

Synonymy list
YearName and author
1987Noritus tenuis Yeh p. 55 figs. Pl. 14, fig. 20, Pl. 27, figs. 6-7

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RankNameAuthor
—Life
—Eukaryota()
classProtozoaGoldfuss 1820
subphylumSarcodinaSchmarda 1871
classReticulareaLankester 1885
subclassRadiolaria(Müller 1858)
RankNameAuthor
superorderPolycystina(Ehrenberg 1838)
orderNassellariaEhrenberg 1875
superfamilyArchaeodictyomitraceaPessagno 1976
familyBagotidae
genusNoritus
speciestenuis

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.

†Noritus tenuis Yeh 1987
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: silicap
Environment: marinep
Locomotion: passively mobilep
Life habit: planktonicp
Diet: omnivorep
Created: 2005-01-28 01:13:47
Modified: 2005-01-28 03:13:47
Source: p = phylum
Reference: Kiessling 1999

Age range: base of the Late/Upper Pliensbachian to the top of the Early/Lower Toarcian or 192.90000 to 182.90000 Ma

Collections (4 total)


Time interval Ma Country or state Original ID and collection number
Late/Upper Pliensbachian192.9 - 184.2USA (Oregon) Noritus tenuis (124324 124327)
Early/Lower Toarcian184.2 - 182.9USA (Oregon) Noritus tenuis (124330 type locality: 124334)