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Globigerinoides obliquus extremus
Taxonomy
Globigerinoides obliquus extremus was named by Bolli and Bermudez (1965).
It was recombined as Globigerinoides obliqua extremus by Bolli and Bermudez (1965); it was recombined as Globigerinoides extremus by Bolli and Bermúdez (1965), Kennett and Srinivasan (1983), Kennett and Srinivasan (1983), Lam and Leckie (2020).
It was recombined as Globigerinoides obliqua extremus by Bolli and Bermudez (1965); it was recombined as Globigerinoides extremus by Bolli and Bermúdez (1965), Kennett and Srinivasan (1983), Kennett and Srinivasan (1983), Lam and Leckie (2020).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1965 | Globigerinoides obliqua extremus Bolli and Bermudez |
| 1965 | Globigerinoides obliquus extremus Bolli and Bermudez p. 139 |
| 1965 | Globigerinoides extremus Bolli and Bermúdez |
| 1983 | Globigerinoides extremus Kennett and Srinivasan |
| 2020 | Globigerinoides extremus Lam and Leckie |
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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.
†Globigerinoides obliquus extremus Bolli and Bermudez 1965
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| H. M. Bolli and P. J. Bermudez 1965 | Shape of test high trochospiral; equatorial periphery distinctly lobate; axial periphery rounded. Wall calcareous, perforate, surface finely pitted. Chambers of the last whorl progressively more compressed, in a lateral, oblique manner; 10 - 12, arranged in 2 to 3 whorls; the k chambers of the last whorl increase fairly rapidly in size, though the. last chamber may be slightly reduced in some specimens. Sutures somewhat, oblique on spiral and umbilical side. Incised. Umbilicus rather narrow. Primary aperture a distinct arch of medium height, interiomarginal, umbilical. One supplementary aperture on last chamber often also visible on earlier ones. largest diameter of holotype: 0.36 mm. | |
| J. P. Kennett and M. S. Srinivasan 1983 | Test medium to high trochospire, all chambers of the final whorl distinctly compressed, the four chambers of the final whorl increasing regularly in size as added, but the last one may be somewhat reduced and distinctly flattened; sutures on both sides radial to slightly curved and depressed; surface distinctly pitted, primary aperture inteeriomarginal, umbilical, a distinct arch of medium height; chambers of the final whorl with one supplementary aperture opposite the primary one. |
Measurements
No measurements are available
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| Source: o = order | |||||
| Reference: Kiessling 2004 | |||||
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Zanclean | USA (North Carolina) | Globigerinoides obliquus (52582) | |
| Piacenzian - Gelasian | Italy | Globigerinoides obliquus (57058) |