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Table 2 Model output predicting diversification rate showing that venom is associated with faster diversification

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

  Coefficient SE t P
Fishes
Intercept 0.0973 0.0057 16.9783  < 2.2 × 10–16
Venom 0.0135 0.0058 2.3092 0.0214
Clade age − 0.0010 0.0001 − 9.6325  < 2.2 × 10–16
Clade age (quadratic) 2.4 × 10–6 3.9 × 10–7 6.1143 2.1 × 10–9
Insects
Intercept 0.1357 0.0216 6.2873 5.1 × 10–10
Venom 0.0207 0.0058 3.5674 0.0004
Clade age − 0.0012 0.0001 − 10.7577  < 2.2 × 10–16
Clade age (quadratic) 2.7 × 10–6 3.2 × 10–7 8.3214 3.3 × 10–16
  1. The estimated parameters from the OU model for fishes were α = 0.050 (phylogenetic half-life of 13.8 my) and σ2 = 0.0001, whereas kappa was estimated to be 3.5 × 10–8 in the insect model. Results shown for diversification rate based on ε = 0.5, see Additional file 1: Table S2 for equivalent model outputs for ε = 0 and ε = 0.9