Phylogenetic systematics of chelonioid sea turtles

Ren Hirayama*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

92 Citations (Scopus)


Abstract Chelonioid sea turtles (Order Testudinata; Superfamily Chelonioidea) first appear in the early Cretaceous (Aptian‐Albian). Their long fossil record is excellent compared to most marine tetrapods. Nonetheless, there has been no inclusive attempt to provide an analysis of cladistic relationships among this group. In this paper, the following chelonioid classification is proposed, based on 76 characters among 20 fossil and six living well‐ represented genera: Family Cheloniidae (Coniacian to Recent); Toxochelys, Ctenochelys, Osteopygis, Erquelinnesia, Allopleuron, Argillochelys, Puppigerus, Eochelone, Syllomus, Natator, Eretmochelys, Chelonia, Caretta, Lepidochelys Family Protostegidae (Aptian to Maastrichtian?); ‘Santana new protostegid’,Rhinochelys, Notochelone, Desmatochelys, Chelosphargis, Protostega, Archelon Family Dermochelyidae (Santonian? to Recent); Corsochelys, ‘HMG new dermo‐chelyid’, Eosphargis, Psephophorus, Dermochelys.

Original languageEnglish
Pages (from-to)270-284
Number of pages15
JournalIsland Arc
Issue number4
Publication statusPublished - 1994 Dec
Externally publishedYes


  • Cheloniidae
  • Chelonioidea
  • Dermochelyidae
  • Protostegidae
  • Reptilia
  • Testudinata
  • classification
  • osteology

ASJC Scopus subject areas

  • Geology


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