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Pachydiscus (Neodesmoceras) soma
Taxonomy
Ammonites soma was named by Forbes (1846). Its type specimen is BMNH C51039, a shell, and it is a 3D body fossil. Its type locality is Pondicherry, which is in a Maastrichtian marine sandstone/claystone in the Valudavur Formation of India.
It was recombined as Pachydiscus (Neodesmoceras) soma by Kennedy and Henderson (1992).
It was recombined as Pachydiscus (Neodesmoceras) soma by Kennedy and Henderson (1992).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1846 | Ammonites soma Forbes p. 102 figs. Pl 7, fig 7 |
| 1992 | Pachydiscus (Neodesmoceras) soma Kennedy and Henderson p. 428 figs. Pl 12, figs 16-18;text-fig 3G |
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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.
†Pachydiscus (Neodesmoceras) soma Forbes 1846
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | |||||
|---|---|---|---|---|---|---|---|
| shell height | 1 | 8.50 | |||||
| shell diameter | 1 | 21.5 | |||||
| shell inflation | 1 | 5.20 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2004, Kiessling 2003 | |||||
Age range: Late/Upper Maastrichtian or 72.20000 to 66.00000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Maastrichtian | India | Ammonites soma (41428) |