Table 4. Similarity matrix based on bone contacts.

	Desmatochelys lowii	Eretmochelys imbricata	Dermochelys coriacea	Chelydra serpentina
Desmatochelys lowii	–	44%	34%	33%
Eretmochelys imbricata	44%	–	51%	45%
Dermochelys coriacea	34%	51%	–	38%
Chelydra serpentina	33%	45%	38%	–

Note:

The similarity between taxa is shown in %.