Spearman rank correlations between richness time series using raw values and after first differencing and generalised differencing.

NEW = new fossil hexapod family richness data presented here, LAB = insect family richness data from Labandeira [11] FR2 = hexapod family richness data from Ross and Jarzembowski [14], RT = range through, BC = boundary crossers + = maximum assumption of richness and − = minimum assumption of richness for FR2 p ^ = per capita origination rate and q ^ = per capita extinction rate. Significance assessed using bootstrapping. * = significant at 95% confidence limit ** = significant at 99% confidence limit. Spearman rank correlations between richness time series using raw values and after first differencing and generalised differencing.