Table 1 Shifts in centroid for morphological and ecological data.

Shifts in centroid are calculated between adjacent time bins with >1 taxon and between pre- and post-extinction recovery intervals (Katian versus Llandovery for the Ordovician extinction, Givetian versus Famennian for the Devonian extinction). Mean shift in centroid is 0.24 for morphology and 0.66 for ecology.

Time bins comparedShifts in centroid,
morphology
Shifts in centroid,
ecology
Darriwilian-Sandbian0.3150.837
Sandbian-Katian0.2870.649
Katian-Hirnantian0.3701.001
Hirnantian-Llandovery0.3180.920
Llandovery-Wenlock0.2680.678
Wenlock-Ludlow0.1950.531
Ludlow-Pridoli0.2000.536
Pridoli-Lochkovian0.2440.708
Lochkovian-Pragian0.2740.676
Pragian-Emsian0.1570.398
Emsian-Eifelian0.1900.503
Eifelian-Givetian0.1790.492
Givetian-Frasnian0.3010.893
Frasnian-Famennian0.2390.732
Famennian-
Tournaisian
0.3681.074
Tournaisian-Visean0.0000.000
Pre-/post-Ordovician
extinction
0.2540.659
Pre-/post-Devonian
extinction
0.3230.936