Figure 3
From: Phenotypic Innovation and Adaptive Constraints in the Evolutionary Radiation of Palaeozoic Crinoids
Taxonomic and morphologic diversification in Palaeozoic eucladid crinoids. Taxonomic data are log transformed to produce a linear expectation between taxonomic diversification and phenotypic change under constant rate Brownian motion. Disparity and diversity values are range standardized using [(x i − min[x])/(max[x] − min[x])]. The red line implies concordance between diversity and disparity33,34. If points fall above the dotted red line, disparity is outpacing diversification; whereas, points falling below the line indicate diversification is outpacing disparification. Error bars are not shown, but the Silurian and Devonian are significantly above the 1:1 line and late Carboniferous falls significantly below it (Supplementary Information, Fig. S13). Ord = Ordovician, Sil = Silurian, Dev = Devonian, Carb = Carboniferous, and Perm = Permian.
