Fig 1.
The reconstructed seeded plant phylogeny.
Branches coloured according to the estimated diversification rate (assuming a relative extinction of ε = 0) of each clade following Magallón & Sanderson (2001). Rate estimates vary from 0/million years (blue) to 0.537/million years (red). Selected orders are labeled to aid interpretation.
Table 1.
Linear models of clade age (million years: my) against ln(S) within 10 million year time windows.
Fig 2.
Logarithm of species richness plotted against net diversification rate (r) across all clades in the phylogeny.
The correlation between log richness and diversification is highly significant (p<0.001, R2 = 0.77, from the linear regression).
Fig 3.
Results of the MEDUSA analysis of diversification rate-shifts on the reconstructed spermatophyte phylogeny.
Numbered circles indicate the model number (see S5 Table) that corresponds with the model of diversification that was fit to the immediately descendent clade, with colour shading identifying the descendent lineages fitting to that model of diversification, allowing rate shifts within clades to be easily distinguished. Parameters associated with these models can be found in S5 Table. Horizontal scale bar represents time in millions of years.