GeologyRocks

The belief that dinosaurs underwent explosive species diversification just before they were wiped out is an illusion. A new study, published today, showed that the main evolutionary changes took place early in the dinosaur's history. The authors constructed a "supertree", which shows how species of dinosaurs evolved and carried out analysis on this to show when the major speciation events occurred.

The paper is published in Royal Proc. Soc. and the abstract and some more links are below: