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Globigerinella clavaticamerata
Taxonomy
Protentella clavaticamerata was named by Jenkins (1977). It is not extant.
It was recombined as Globigerinella clavaticamerata by Spezzaferri et al. (2018).
It was recombined as Globigerinella clavaticamerata by Spezzaferri et al. (2018).
Sister species lacking formal opinion data
Entered
by A. McCoy (authorized by J. Sessa) on 2024-08-28
Synonymy list
| Year | Name and author |
|---|---|
| 1977 | Protentella clavaticamerata Jenkins pp. 308-312 |
| 2018 | Globigerinella clavaticamerata Spezzaferri et al. p. 192 |
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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.
†Globigerinella clavaticamerata Jenkins 1977
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| D. G. Jenkins 1977 | Test free, small, involute, biumbilicate, peripheral outline lobate, periphery rounded. Chambers spherical, appressed in earlier part of final whorl of five and one-half chambers with the last becoming radially elongate, and with the final whorl embracing previous whorls. Sutures distinct, incised, radial to curved. Wall calcareous, hispid, finely perforate, earlier chambers with thickened walls. Aperture basal, equatorial, low arch, with a distinct protruding lip. Greatest diameter 0.26 mm | |
| S. Spezzaferri et al. 2018 | Type of wall: Spinose; spines are supported by spine collars, which coalesce to form ridges. Pore concentrations range from around 80 pores/50 μm2 test surface area and pore diameters range from around 2 μm.
Test morphology: Test very low trochospiral, consisting of 2 whorls, sometimes becoming almost planispiral in the last whorl, ovate and slightly lobulate in outline, 4-6 chambers in the last whorl, increasing moderately in size, the last chamber, sometimes the last two chambers of the last whorl may be strongly radially elongated, sutures depressed, straight to slightly curved on both sides; aperture at the base of the last chamber interiomarginal a low arch bordered by a distinct lip. Size: Maximum diameter of the holotype 0.26mm. |