Reptilia - Testudines - Cheloniidae

Full reference: R. Lydekker. 1889. On remains of Eocene and Mesozoic Chelonia and a tooth of (?) Ornithopsis. Quarterly Journal of the Geological Society of London 45:227-246

Parent taxon: Eocheloniinae according to R. E. Weems 1988

Sister taxa: Eochelone, Glarichelys

Subtaxa: Argillochelys antiqua, Argillochelys brachyceps, Argillochelys convexa, Argillochelys cuneiceps, Argillochelys subcristata

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Type: Chelone cuneiceps

Ecology: aquatic omnivore