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Saitoum thayeri

Protozoa - Nassellaria - Poulpidae

Discussion

Original description: Test small, hemispherical perforate with variable size of elliptical pores. Aperture subcircular in outline, with velum-like structure. Horn short, triradiate. Feet long, triradiate with three deep, wide grooves alternating with three ridges, grooves about twice as wide as ridges.

Original remarks: Saitoum thayeri, n. sp. differs from Saitoum smithi, n. sp., by having variable size of pores on cephalis, and by having velum-like structure around aperture.

Etymology: This species is named for Dr. T. P. Thayer for his contributions to the geology of east-central Oregon.

Taxonomy
Saitoum thayeri was named by Yeh (1987). Its type specimen is NMNS (000161) and is a 3D body fossil. Its type locality is Suplee-Izee area, OR-600A, which is in a Toarcian marine tuff/limestone in the Hyde Formation of Oregon.

Synonymy list
YearName and author
1987Saitoum thayeri Yeh p. 98 figs. Pl. 12, figs. 6, 11; Pl. 13, figs. 12, 21; Pl. 26, figs. 12, 23

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RankNameAuthor
—Life
—Eukaryota()
classProtozoaGoldfuss 1820
subphylumSarcodinaSchmarda 1871
classReticulareaLankester 1885
subclassRadiolaria(Müller 1858)
RankNameAuthor
superorderPolycystina(Ehrenberg 1838)
orderNassellariaEhrenberg 1875
familyPoulpidaeDe Wever 1981
genusSaitoumPessagno 1977
speciesthayeri

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.

†Saitoum thayeri 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: Early/Lower Toarcian or 184.20000 to 182.90000 Ma

Collections (4 total)


Time interval Ma Country or state Original ID and collection number
Early/Lower Toarcian184.2 - 182.9USA (Oregon) Saitoum thayeri (type locality: 124328 124330 124331 124334)