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Cosmochelys
Taxonomy
Cosmochelys was named by Andrews (1920) [Sepkoski's age data: T Eo-l Sepkoski's reference number: 2]. It is not extant.
It was assigned to Dermochelyinae by Weems (1988); to Dermochelyidae by Carroll (1988); to Chelonia by Sepkoski (2002); and to Dermochelyini by Gentry et al. (2025).
It was assigned to Dermochelyinae by Weems (1988); to Dermochelyidae by Carroll (1988); to Chelonia by Sepkoski (2002); and to Dermochelyini by Gentry et al. (2025).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1920 | Cosmochelys Andrews p. 314 figs. text 2-3; plate 2 |
| 1988 | Cosmochelys Carroll |
| 1988 | Cosmochelys Weems p. 141 figs. Table 2 |
| 2002 | Cosmochelys Sepkoski |
| 2025 | Cosmochelys Gentry et al. |
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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 | |
|---|---|---|
| A. D. Gentry et al. 2025 | Cosmochelys dolloi is unique among dermochelyids due to a ridge morphology with small pointed keels restricted to the center of otherwise flat ossicles. Along with the poorly known A. crassiscutata, Co. dolloi has a deeply sculptured external surface that includes tubercules (Tong et al. 1999). |