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Surculites (Megasurcula) remondii
Taxonomy
Metula remondii was named by Gabb (1866). It is a 3D body fossil.
It was recombined as Pseudotoma remondii by Stewart (1927); it was recombined as Surculites (Megasurcula) remondii by Grant, IV and Gale (1931) and Stanton (1966).
It was recombined as Pseudotoma remondii by Stewart (1927); it was recombined as Surculites (Megasurcula) remondii by Grant, IV and Gale (1931) and Stanton (1966).
Sister species lacking formal opinion data
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1866 | Metula remondii Gabb p. 3 figs. pl. 1, fig. 5 |
| 1904 | Pleurotoma (Genota) stearnsiana Raymond p. 1 |
| 1906 | Pleurotoma (Genota) stearnsiana Raymond p. 38 |
| 1927 | Pseudotoma remondii Stewart pp. 422 - 423 figs. Plate XXXI, fig. 5 |
| 1931 | Surculites (Megasurcula) remondii Grant, IV and Gale |
| 1946 | Megasurcula stearnsiana Willett p. 29 |
| 1966 | Surculites (Megasurcula) remondii Stanton, Jr. p. 35 |
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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.
†Surculites (Megasurcula) remondii Gabb 1866
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Invalid names: Pleurotoma (Genota) stearnsiana Raymond 1904 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| U. S. Grant, IV and H. R. Gale 1931 | Shell of small or medium size, biconic, short; whorls with a variable amount of angulation, sometimes the angulation very slight, the whorls being hardly concave above and only moderately convex below, and the suture not far below the angle and inconspicuous so that the whorls merge into each other to form a smoothly conical spire, sometimes the angulation stronger as m S. carpenterianus variety tryonianus; sculpture of about ten low, widely spaced spiral cords on the body whorl usually with an intercalary between each pair and not infrequently a set of secondary intercalaries between these, the differentiation of the spirals becoming less distmct upwards until the differentiated spirals merge at the angle into the numerous uniform fine spiral threads of the concave area, growth lines moderately strong, and sometimes on the early whorls obscure axial riblets, about fifteen to the whorl; aperture a Uttle longer than half the length of the shell, lenticular, elongate, outer lip simple, with a wide, shallow posterior notch between the angle and the suture, columella smooth, slightly flexuous, with a thin callus, anterior canal short, wide, not differentiated, slightly notched behind ; operculum with a termmal nucleus. |
Measurements
No measurements are available
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| Source: f = family, c = class | |||||
| References: Hendy et al. 2009, Kiessling 2004 | |||||
Age range: base of the Early/Lower Pliocene to the top of the Late/Upper Pleistocene or 5.33300 to 0.01170 Ma
Collections (6 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Pliocene | USA (California) | Surculites remondii (96903 96911) | |
| Late/Upper Pliocene | USA (California) | Megasurcula remondii (96571) Megasurcula stearnsiana (200398) | |
| Middle Pleistocene | USA (California) | Surculites remondii (96884) | |
| Late/Upper Pleistocene | USA (California) | Megasurcula remondii (59063) |