Figure 4
Paleoenvironmental correlates and diversification dynamics of ferns. (a) Correlation parameters (G i ) for fern originations and extinctions with darker colours indicating higher shrinkage weight (red for negative, blue for positive correlation). Significant correlations (shrinkage weight >0.5) are indicated by asterisks. (b) Origination (left panel) and extinction (right panel) rates through time as estimated from the fossil record using the BDS model and (c) by the MBD model. The clear similarity between origination and extinction dynamics estimated under the two models indicate that the MBD model and the set of variables tested here can adequately recover the rates inferred under the BDS model disregarding potential correlates.
