PaleoDB taxon number: 37609
Synonyms: Chelydae Gray 1869 (no. 361807), Chelydidae Gray 1869 (no. 67807), Chelyidae Gray 1869 (no. 235469), Hydraspidae Cope 1868 (no. 382168), Hydraspididae Cope 1868 (no. 359879)
Parent taxon: Pleurodira according to M. B. de Silva Lacerda et al. 2020
Sister taxa: Amphichelydidae, Eupleurodira, Megapleurodira, Minipleurodira, Notoemydidae, Panchelidae, Panpelomedusoides, Pelomedusoides, Platychelira, Podocnemididae, Podocnemidoidae
Subtaxa: Acanthochelys, Birlimarr, Chelinae, Chelodina, Chelodininae, Chelus, Chelymys antiqua, Chelymys arata, Elseya, Emydura, Hydraspis, Hydraspis arenarius, Hydromedusa, Hydromedusinae, Mendozachelys, Myuchelys, Naiadochelys patagonica, Pelecomastes ampla, Phrynops, Platemys, Platemys bergii, Platemys entreriana, Platemys holmbergii, Platemys mesopotamica, Platemys robusta, Platemys torrentium, Prochelidella, Pseudemydura, Rheodytes, Rionegrochelys, Trionyx argentina, Yaminuechelys
Type: Chelus
Ecology: amphibious piscivore