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Higumastra lupheri

Protozoa - Spumellaria - Hagiastridae

Discussion

Description: Rays medium in length, wide proximally, slightly tapering distally with long massive triradiate spines, one spine slightly longer than other three. Test comprised of large, nearly uniform size

of linearly arranged tetragonal pore frames on rays, small pentagonal and hexagonal concentrically arranged pore frames at central area. Central area medium in size. All pore frames lacking prominent nodes at vertices. Test with or without patagium.

Remarks: Higumastra lupheri, n. sp., differs from H. oregonensis, n. sp., by having wider and shorter rays with longer primary spines and by possessing concentrically arranged pore frames on the cortical shell of central area.

Etymology: This species is named for Dr. R. L. Lupher in hornor of his early contribution to the geology of east-central Oregon.

Taxonomy
Higumastra lupheri was named by Yeh (1987). Its type specimen is NMNS (000013) 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.

Sister species lacking formal opinion data
H. gratiosa, H. hilara, H. spinosa, H. spinosum

Synonymy list
YearName and author
1987Higumastra lupheri Yeh p. 25 figs. Plate 8, fig ures 8, 24

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RankNameAuthor
—Life
—Eukaryota()
classProtozoaGoldfuss 1820
subphylumSarcodinaSchmarda 1871
classReticulareaLankester 1885
RankNameAuthor
subclassRadiolaria(Müller 1858)
orderSpumellariaEhrenberg 1875
familyHagiastridaeRiedel 1971
genusHigumastraBaumgartner 1980
specieslupheri

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.

†Higumastra lupheri 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 Early/Lower Toarcian to the top of the Early/Lower Bajocian or 183.00000 to 168.40000 Ma

Collections (10 total)


Time interval Ma Country or state Original ID and collection number
Early/Lower Toarcian183.0 - 182.0Japan Higumastra lupheri (124830)
Early/Lower Toarcian183.0 - 182.0USA (Oregon) Higumastra lupheri (type locality: 124328 124329 124330 124331 124334)
Middle Toarcian - Late/Upper Toarcian182.0 - 175.6Canada (British Columbia) Higumastra sp. A (71099)
Early/Lower Bajocian171.6 - 168.4Canada (British Columbia) Crucella sp. A (71123 71124) Higumastra sp. A (71125)