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Table 1 Model output predicting species richness showing that all included explanatory variables were significant predictors of diversity, though diversification rate dominated

From: Radiating pain: venom has contributed to the diversification of the largest radiations of vertebrate and invertebrate animals

  Coefficient SE t P
Fishes
Intercept − 1.0392 0.7996 − 1.2996 0.1944
Venom 0.5201 0.2242 2.3202 0.0208
Diversification rate 29.6560 1.3786 21.5108 < 2.2 × 10–16
Clade age 0.0436 0.0048 9.1523 < 2.2 × 10–16
Clade age (quadratic) − 0.0001 0.00002 − 6.9864 1.0 × 10–11
Insects
Intercept − 1.1889 0.3980 − 2.9869 0.0029
Venom 0.5777 0.1694 3.4094 0.0007
Diversification rate 39.5480 1.7124 23.0944  < 2.2 × 10–16
Clade age 0.0515 0.0046 11.1436  < 2.2 × 10–16
Clade age (quadratic) − 0.0001 0.00001 − 9.0802  < 2.2 × 10–16
  1. Lambda parameter for fish model was estimated to be 0.784, the estimated parameters from the OU model for insects were α = 0.016 (phylogenetic half-life of 43.7my) and σ2 = 0.098. Results shown for diversification rate based on ε = 0.5, see Additional file 1: Table S1 for equivalent model outputs for ε = 0 and ε = 0.9