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Eosphargis
Taxonomy
Eosphargis was named by Lydekker (1889) [Sepkoski's age data: T Eo-l Sepkoski's reference number: 1066]. It is not extant.
It was assigned to Allopleuroninae by Weems (1988); to Chelonia by Sepkoski (2002); and to Dermochelyidae by Lydekker (1889), Carroll (1988), Hirayama (1995), Joyce et al. (2004), Weems (2014), Gentry et al. (2025).
It was assigned to Allopleuroninae by Weems (1988); to Chelonia by Sepkoski (2002); and to Dermochelyidae by Lydekker (1889), Carroll (1988), Hirayama (1995), Joyce et al. (2004), Weems (2014), Gentry et al. (2025).
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1889 | Eosphargis Lydekker |
| 1963 | Anglocetus Tarlo pp. 320-321 fig. 1 |
| 1967 | Anglocetus Harland et al. p. 774 |
| 1972 | Anglocetus Sahni and Mishra p. 491 |
| 1973 | Anglocetus Romero-Herrera et al. p. 391 |
| 1988 | Eosphargis Carroll |
| 1988 | Eosphargis Weems p. 141 figs. Table 2 |
| 1995 | Eosphargis Hirayama p. 282 |
| 2002 | Eosphargis Sepkoski |
| 2004 | Eosphargis Joyce et al. |
| 2014 | Eosphargis Weems |
| 2025 | Eosphargis 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.
G. †Eosphargis Lydekker 1889
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†Eosphargis breineri Nielsen 1959
†Eosphargis insularis Cope 1872
Invalid names: Anglocetus Tarlo 1963 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| A. D. Gentry et al. 2025 | Eosphargis can be distinguished from other dermochelyids by retaining a carapace that includes a nuchal, costals, peripherals, and pygal, i.e., lacking a mosaic of bony ossicles. |
Measurements
No measurements are available
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| Source: f = family, c = class, subp = subphylum | |||||
| References: Hendy et al. 2009, Carroll 1988, Kiessling 2004, Uetz 2005 | |||||
Age range: base of the Late/Upper Paleocene to the top of the Wasatchian or 59.24000 to 51.10000 Ma
Collections (8 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Paleocene | USA (Virginia) | E. insularis (167192) | |
| Thanetian | USA (New Jersey) | Lembonax insularis (123512) | |
| Wasatchian | USA (Virginia) | E. gigas (15595) | |
| Ypresian | Belgium (Brabant) | E. gigas (188444) | |
| Ypresian | USA (Maryland ) | E. gigas (124192) | |
| Ypresian | United Kingdom (England) | Anglocetus beatsoni (13299) Chelone gigas (167274) | |
| Ypresian | Denmark | E. breineri (196472) |