Defusing the Cambrian 'explosion'?
A recent molecular phylogenetic study argues against the orthodox view that metazoan phyla emerged abruptly during the Cambrian 'explosion', pointing instead to a protracted history for metazoans that arguably stretches back a billion years or more; the fossils, however, seem to tell a different story.
Morris
S C
SC
Department of Earth Sciences, University of Cambridge, Cambridge, UK.
D000818:Animals; D005580:Fossils; D014644:Genetic Variation; D008954:Models, Biological; D010802:Phylogeny; D011506:Proteins / Q000235:genetics*; D012337:RNA, Ribosomal, 18S / Q000235:genetics; D013995:Time
D011506:Proteins; D012337:RNA, Ribosomal, 18S