Clade age and species richness are unrelated across 1,397 clades of multicellular eukaryotes.

<p>(A) Relationship between log(richness) and clade age (PGLS β = 0.0008, <i>p</i> = 0.66). (B) Same relationship as (A), but fitted model is projected onto logarithmic timescale to better visualize the relationship among age and richness for younger clades. The regression coefficient β represents the change in log-transformed diversity per million years.