Table 2.

Range area correlations among species with similar palaeoecology. (a) Inferred large, pelagic (circular vertebral centra suggesting fusiform-body) predators; (b) inferred large, nekto-benthic durophagous lifestyle. (A Bonferroni correction [71] for multiple comparisons indicates a critical p-value of p ≤ 0.002 for statistical significance.)

taxon A	taxon B	Spearman's ρ	p-value	Kendall's τ	p-value
(a) Inferred pelagic, predatory taxa
Cretoxyrhina mantelli	Squalicorax falcatus	0.928	0.022	0.828	0.020
Cretoxyrhina mantelli	Squalicorax kaupi	−0.882	0.036	−0.786	0.027
Cretoxyrhina mantelli	Tylosaurus sp.	−0.765	0.097	−0.643	0.070
Cretoxyrhina mantelli	Platecarpus sp.	−0.431	0.392	−0.386	0.277
Cretoxyrhina mantelli	Xiphactinus sp.	0.174	0.733	0.138	0.697
Squalicorax falcatus	Squalicorax kaupi	−0.812	0.072	−0.690	0.052
Squalicorax falcatus	Tylosaurus sp.	−0.696	0.144	−0.552	0.120
Squalicorax falcatus	Platecarpus sp.	−0.334	0.533	−0.298	0.401
Squalicorax falcatus	Xiphactinus sp.	0.371	0.419	0.333	0.348
Squalicorax kaupi	Tylosaurus sp.	0.765	0.097	0.571	0.107
Squalicorax kaupi	Platecarpus sp.	0.770	0.108	0.617	0.082
Squalicorax kaupi	Xiphactinus sp.	0.058	0.933	0.000	1.000
Platecarpus sp.	Tylosaurus sp.	0.524	0.283	0.463	0.192
Platecarpus sp.	Xiphactinus sp.	0.152	0.833	0.149	0.674
Tylosaurus sp.	Xiphactinus sp.	−0.058	0.933	−0.138	0.697
(b) Inferred nekto-benthic, durophagous taxa
Ptychodus anonymus	Ptychodus mortoni	−0.185	0.742	−0.077	0.828
Ptychodus anonymus	Ptychodus whipplei	0.936	0.025	0.833	0.019
Ptychodus anonymus	Rhinobatos incertus	0.880	0.050	0.745	0.036
Ptychodus mortoni	Ptychodus whipplei	0.092	0.883	0.077	0.828
Ptychodus mortoni	Rhinobatos incertus	−0.058	0.933	0.000	1.000
Ptychodus whipplei	Rhinobatos incertus	0.786	0.117	0.596	0.093