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Prionochelys
Reptilia - Testudines
Taxonomy
Prionochelys was named by Zangerl (1953) [Sepkoski's age data: K Camp-l K Camp-u Sepkoski's reference number: 987].
It was assigned to Lophochelyinae by Zangerl (1953), Baird and Case (1966) and Thurmond and Jones (1981); to Lophocheliinae by Weems (1988); to Toxochelyidae by Carroll (1988); to Chelonia by Sepkoski (2002); and to Pancheloniidae by Gentry (2018).
It was assigned to Lophochelyinae by Zangerl (1953), Baird and Case (1966) and Thurmond and Jones (1981); to Lophocheliinae by Weems (1988); to Toxochelyidae by Carroll (1988); to Chelonia by Sepkoski (2002); and to Pancheloniidae by Gentry (2018).
Synonymy list
| Year | Name and author |
|---|---|
| 1953 | Prionochelys Zangerl p. 247 |
| 1966 | Prionochelys Baird and Case p. 1213 |
| 1981 | Prionochelys Thurmond and Jones p. 133 |
| 1988 | Prionochelys Carroll |
| 1988 | Prionochelys Weems p. 141 figs. Table 2 |
| 2002 | Prionochelys Sepkoski, Jr. |
| 2018 | Prionochelys Gentry |
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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 2018 | Moderately sized marine turtle similar in size to Ctenochelys stenoporus. Differentiated from Toxochelys Cope, 1873 and Thinochelys Zangerl, 1953 by the presence of keeled neurals, epineurals, and strongly serrated posterior peripherals. Diagnosed from other Cretaceous pan-cheloniids such as Ctenochelys spp. by the highly serrated lateral edges of peripherals 411 and the deeply embayed anterior nuchal emargination resulting in a more distinctly cordiform carapacial outline. Diagnosed from Peritresius spp. by the increased contact between the hyo- and hypoplastron, the relative width of the neuralia, and the presence of eight neurals and one preneural. |
Measurements
No measurements are available
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| Source: subo = suborder, c = class, subp = subphylum | |||||
| References: Uetz 2005, Carroll 1988, Hendy et al. 2009 | |||||
Age range: base of the Santonian to the top of the Early/Lower Maastrichtian or 86.30000 to 66.00000 Ma
Collections (16 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Turonian - Santonian | USA (Kansas) | P. galeotergum (38720) | |
| Santonian | USA (Alabama) | P. matutina (81927 197317) | |
| Campanian | USA (Alabama) | P. matutina (197308 197309 197310 197311 197312 197313 197314 197315 197316) | |
| Late/Upper Campanian | USA (Arkansas) | P. nauta (81996 82004) | |
| Maastrichtian | USA (New Jersey) | P. nauta (99138) | |
| Early/Lower Maastrichtian | USA (New Jersey) | P. nauta (14504) |