Table 2.

Short-term turnover within Eocene and within Plio-Pleistocene in genus and family abundances is not significantly higher onshore than offshore, using the test of HMD. (The summary statistics and the combined p-value between onshore and offshore and the 2.5 and 97.5th percentiles are based on 1000 runs standardized to four assemblages per habitat and n = 100 individuals per assemblage.)

habitat comparison	level	mean onshore–offshore difference in dispersion	2.5th percentile	97.5th percentile	combined p-value	level	mean onshore–offshore difference in dispersion	2.5th percentile	97.5th percentile	combined p-value
Eocene peritidal versus nearshore	genera	0.087	0.033	0.145	0.217	families	0.072	0.012	0.138	0.307
Eocene peritidal versus inner shelf	genera	−0.090	−0.138	−0.036	1	families	−0.039	−0.100	0.025	0.941
Eocene peritidal versus outer shelf	genera	−0.045	−0.080	−0.010	0.997	families	−0.044	−0.081	−0.006	0.995
Eocene nearshore versus inner shelf	genera	−0.177	−0.242	−0.110	1	families	−0.111	−0.193	−0.032	0.999
Eocene nearshore versus outer shelf	genera	−0.132	−0.191	−0.078	1	families	−0.117	−0.182	−0.058	1
Eocene inner shelf versus outer shelf	genera	0.045	−0.003	0.093	0.246	families	−0.005	−0.066	0.055	0.729
Plio-Pl. peritidal versus nearshore	genera	0.054	−0.049	0.155	0.325	families	0.082	−0.033	0.185	0.231
Plio-Pl. peritidal versus inner shelf	genera	0.026	−0.106	0.173	0.545	families	0.044	−0.093	0.170	0.425
Plio-Pl. peritidal versus outer shelf	genera	0.143	0.014	0.266	0.131	families	0.138	0.007	0.265	0.141
Plio-Pl. nearshore versus inner shelf	genera	−0.028	−0.148	0.120	0.784	families	−0.038	−0.158	0.079	0.827
Plio-Pl. nearshore versus outer shelf	genera	0.089	−0.036	0.207	0.260	families	0.055	−0.060	0.163	0.360
Plio-Pl. inner shelf versus outer shelf	genera	0.116	−0.056	0.264	0.221	families	0.093	−0.046	0.229	0.252