Sphaeroidinellopsis disjuncta ...
Sphaeroidinellopsis disjuncta (Finlay, 1940) 1958 Non Sphaeroidinella cellata Subbotina Bykova: pl. 11, figs 4, 5. 1983 Sphaerodinellopsis disjuncta Kennett & Srinivasan: pl. 51, figs 3–5. 1994 Sphaeroidinellopsis disjuncta Spezzaferri: pl. 10, fig. 4a–c. 2020 Sphaerodinellopsis disjuncta Lam &a...
| Main Authors: | , , , |
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| Format: | Text |
| Language: | unknown |
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Zenodo
2021
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| Subjects: | |
| Online Access: | https://dx.doi.org/10.5281/zenodo.10960121 https://zenodo.org/doi/10.5281/zenodo.10960121 |
| Summary: | Sphaeroidinellopsis disjuncta (Finlay, 1940) 1958 Non Sphaeroidinella cellata Subbotina Bykova: pl. 11, figs 4, 5. 1983 Sphaerodinellopsis disjuncta Kennett & Srinivasan: pl. 51, figs 3–5. 1994 Sphaeroidinellopsis disjuncta Spezzaferri: pl. 10, fig. 4a–c. 2020 Sphaerodinellopsis disjuncta Lam & Leckie: pl. 10, figs 11, 12. Test morphology. Test compact and mid-trochospiral. In umbilical view, sutures are slightly incised and radial, umbilicus is narrow and deep with a low-arched umbilical aperture bordered by a thick rim. The final chamber tends to be smaller than or the same size as the penultimate chamber. In spiral view two whorls are visible for a total of six to seven chambers, separated by incised straight sutures. In edge view, the profile is rounded and slightly triangular due to the reduced size of the final chamber, chambers from previous whorls visible in the low trochospire. The last whorl presents 31 / 2 to 4 subglobular chambers slowly growing in size as added. Range. Burdigalian Zone ... : Published as part of Fabbrini, Alessio, Zaminga, Ilaria, Ezard, Thomas H. G. & Wade, Bridget S., 2021, Systematic taxonomy of middle Miocene Sphaeroidinellopsis (planktonic foraminifera), pp. 953-968 in Journal of Systematic Palaeontology 19 (13) on pages 955-957, DOI: 10.1080/14772019.2021.1991500, http://zenodo.org/record/10960117 ... |
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