| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Hammatoceras trigonatum
Taxonomy
Ammonites trigonatus was named by Quenstedt (1885) [Ammonites insignis trigonatus].
It was recombined as Hammatoceras trigonatum by Kovács (2009).
It was recombined as Hammatoceras trigonatum by Kovács (2009).
Sister species lacking formal opinion data
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1885 | Ammonites trigonatus Quenstedt p. 399 figs. Pl 50, fig 5 |
| 1921 | Hammatoceras cappucinum Buckman figs. Pl 206a-b |
| 2009 | Hammatoceras trigonatum Kovács p. 33 fig. 21 |
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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 trigonatum Quenstedt 1885
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Invalid names: Hammatoceras cappucinum Buckman 1921 [synonym]
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | |||||
|---|---|---|---|---|---|---|---|
| shell height | 1 | 60.0 | |||||
| shell diameter | 1 | 195.0 | |||||
| shell inflation | 1 | 85.0 |
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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 |
|---|---|---|---|
| Levesquei | France (Deux-Sevrès) | Hammatoceras cappucinum (140875) | |
| Late/Upper Toarcian | Hungary | Hammatoceras trigonatum (108577) |