Cladogram
Below is a cladogram showing the phylogenetic relationships of living and extinct sea turtles in the family Cheloniidae based on Lynch and Parham (2003) and Parham and Pyenson (2010).
| Phylogenetic relations of living and extinct Cheloniidae species |
| Cheloniidae sensu lato |
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†Toxochelys
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†Mexichelys
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†Lophochleyinae
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†Euclastes
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†Argillochelys
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†Eochelone
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†Erquelinnesla
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†Pacifichelys
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†Puppigerus
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| Cheloniidae sensu stricto |
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†Syllomus
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†Procolpochelys
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Chelonia mydas
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Natator depressus
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Eretmochelys imbricata
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| Carettini |
| Lepidochelys |
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Lepidochelys kempii
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Lepidochelys olivacea
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Caretta caretta
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