Back
Sphairionia stellata
Sphairionia stellata Shahinf., Yegan., Arefif., Vachard, J.L. Payne Geol. J., 55(9): 19. 10 Mar 2020
- Name
- Sphairionia stellata
- Rank
- Species
- Generic Name
- [Genus] Sphairionia
- Authors (Pub.)
- Shahinfar S.
Yeganeh B. Y.
Arefifard S.
Vachard D.
Payne J. L.
- Publication
- Refined foraminiferal biostratigraphy of upper Wordian, Capitanian, and Wuchiapingian strata in Hambast Valley, Abadeh region (Iran), and paleobiogeographic implications [2020/3]
- Journal
- Geological Journal
- Volume
- 55
- Issue
- 9
- Page number
- 19
- Year
- 2020
- Fossil Status
- thallus (calcareous)
- Stratigraphy
- Wordian
- Strat. comment
- Capitanian
- Location
- Hambast Valley, Abadeh region, Iran
- Paleoregion
- Eurasia (Mesopotamian Plain)
Data for Holotypus
- Repository
- Lorestan University, Palaeontology Repository, Khorramabad, Iran
- Repository Number
- Sample HS-67-2 = ALU 193
Data for Paratypus
- Repository
- Lorestan University, Palaeontology Repository, Khorramabad, Iran
- Repository Number
- Figures 6.15, Figures 7.17 (samples HS-67-1 = ALU 192 and HS-67-3 = ALU
194)
- Diagnosis
- Test is unilocular with a spherical, relatively broad, and
round central cavity, with thick wall and several radiate, elongate projections.
The microgranular inner layer of the wall is well marked, as
well as the hyaline radial outer layer. Total diameter (with
projections) = 0.280–0.525 mm; outer diameter of central cavity = 0
.250–0.285 mm; inner diameter of central cavity = 0.180–0.220 mm;
length of unbroken projections = 0.080–0.200 mm; width of
projections = 0.020–0.100 mm; thickness of microgranular inner layer
of wall = 0.005–0.007 mm; thickness of hyaline outer layer of
wall = 0.030–0.033 mm; total wall thickness = 0.040–0.050 mm. Since
apertures and necks are very thin and very narrow and they appear only
when the section passes in the middle of the apertures, the location of
apertures is difficult to determine.
