Table 1. Results of the permutational analysis of variance to test for differences in tooth shape between the examined groups. An asterisk indicates a p-value < 0.05. SS, sum of squares; MS, mean squares.

Group	Effect	df	SS	MS	R2	F	p
Total sample	Genus	2	1.1479	0.57393	0.1237	39.948	0.001*
	Residuals	566	8.1317	0.01437	0.8763
	Total	568	9.2796
Galeocerdo only	Epoch	4	0.7280	0.181997	0.1365	17.31	0.001*
	Residuals	438	4.6052	0.010514	0.8635
	Total	442	5.3332
Galeocerdo only	Species	6	1.3366	0.222770	0.25062	24.302	0.001*
	Residuals	436	3.9966	0.009167	0.74938
	Total	442	5.3332