News Finding: Darwin's dilemma resolved - high rates of evolution in Cambrian explosion consistent with natural selection: 
Paper Finding: This study provides the first explicit estimates of rates of both phenotypic and molecular evolution during the Cambrian explosion, permitting illuminating comparisons with later Phanerozoic rates.
News Context: Darwin's dilemma resolved - high rates of evolution in Cambrian explosion consistent with natural selection: 
Paper Context: Phenotypic traits diverge at 1.17% pMyr in the early Cambrian, w83 the average rate for the remainder of the Phanerozoic (0.139% pMyr); molecular divergence is 0.204% pMyr, w93 the subsequent rate (0.021%). This study provides the first explicit estimates of rates of both phenotypic and molecular evolution during the Cambrian explosion, permitting illuminating comparisons with later Phanerozoic rates. The 4-and 5.5-fold increases in phenotypic and molecular evolutionary rates respectively provide quantitative support for the widespread view that evolutionary rates were elevated during the Cambrian explosion.