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Worthenia multicarinata
Taxonomy
Pleurotomaria multicarinata was named by Mansuy (1912). It is a 3D body fossil.
It was recombined as Worthenia multicarinata by Delpey (1941), Batten (1972).
It was recombined as Worthenia multicarinata by Delpey (1941), Batten (1972).
Sister species lacking formal opinion data
Synonymy list
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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.
†Worthenia multicarinata Mansuy 1912
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R. L. Batten 1972 | Moderately low to high-spired shells with a quadrate whorl shape; last several whorls becoming uncoiled in adult forms; convexo-concave upper whorl surface forming a low angle to axis; a weak spiral cord with weak nodes adjacent to suture on upper whorl surface; just below is a row of very prominent, rounded nodes which become elongated and weakly developed on final whorl; concave portion of upper whorl face adjacent to selenizone with three or more spiral threads variable in distribution; selenizone flat and unornamented in first several whorls, with elongated prominent nodes later, with three or more spiral threads, on final whorl nodes gradually become reduced, more numerous, irregular, and finally disappear; outer whorl face concave, with three spiral threads variable in development and distribution; lower margin about equal in development to upper margin with more numerous, weaker nodes reinforced at intersections with three or so spiral threads; base with 14 or more spiral cords and threads variably developed and distributed; hemiomphalus or cryptomphalus; collabral cords near umbilicus; columellar lip slightly reflexed; parietal deposits abrupt and thick within plane of aperture. |
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 4 | 20.2 | 7.60 | 65.0 | 18.4 | 25.6 | |
| shell diameter | 4 | 19.3 | 7.90 | 60.0 | 15.2 | 28.2 |
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| Source: f = family, superf = superfamily, o = order | |||||
| References: Wagner 2023, Bambach et al. 2007 | |||||
Age range: base of the Kungurian to the top of the Capitanian or 283.30000 to 259.51000 Ma
Collections (3 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Kungurian | Malaysia (Perak) | Worthenia multicarinata (62131) | |
| Capitanian | Japan | Pleurotomaria multicarinata (109637) | |
| Capitanian | Cambodia | Worthenia multicarinata (107282) |