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| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Hammatoceras semilunatum
Taxonomy
Ammonites semilunatus was named by Quenstedt (1885) [Ammonites insignis semilunatus]. It is not extant.
It was recombined as Hammatoceras semilunatum by Kovács (2009).
It was recombined as Hammatoceras semilunatum by Kovács (2009).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1885 | Ammonites semilunatus Quenstedt |
| 2009 | Hammatoceras semilunatum Kovács p. 36 fig. 23 |
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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.
†Hammatoceras semilunatum Quenstedt 1885
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | |||||
|---|---|---|---|---|---|---|---|
| shell height | 1 | 36.0 | |||||
| shell diameter | 1 | 120.0 | |||||
| shell inflation | 1 | 44.0 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2003, Kiessling 2004 | |||||
Age range: Late/Upper Toarcian or 180.10000 to 175.60000 Ma
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Toarcian | Spain (Murcia) | Hammatoceras semilunatum (201641) | |
| Late/Upper Toarcian | Hungary | Hammatoceras semilunatum (108576) |