Considering the enormous diversity of living organisms, representing mostly untapped resources for studying ecological, ontogenetic and phylogenetic patterns and processes, why should evolutionary biologists concern themselves with the remains of animals and plants that died out tens or even hundreds of millions of years ago? The reason is that important new insights into some of the most vexin...

Analysis of numerous trace fossils reveals 'nest scrape displays' made by dinosaurs that are analogous to those left by modern birds.