| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Achelonia
Taxonomy
Achelonia was named by von Meyer (1860). Its type is Achelonia formosa. It was considered monophyletic by Anquetin et al. (2017).
It was assigned to Eurysternidae by Anquetin et al. (2017); and to Thalassochelydia by Joyce and Mäuser (2020).
It was assigned to Eurysternidae by Anquetin et al. (2017); and to Thalassochelydia by Joyce and Mäuser (2020).
Species
A. formosa (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 1860 | Achelonia von Meyer |
| 2017 | Achelonia Anquetin et al. pp. 329-330 |
| 2020 | Achelonia Joyce and Mäuser |
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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.
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. Anquetin et al. 2017 | Achelonia formosa can be diagnosed as a “eurysternid” by moderate size and presence of a ligamentous bridge. |
Measurements
No measurements are available
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| Source: c = class, subp = subphylum, uc = unranked clade | |||||
| References: Hendy et al. 2009, Carroll 1988 | |||||
Age range: Late/Upper Kimmeridgian or 155.70000 to 150.80000 Ma
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Kimmeridgian | Germany (Bavaria) | A. formosa (132944) | |
| Late/Upper Kimmeridgian | France | A. formosa (24426) |