The story of two of the strangest animals on the planet just ... of Louisville who studies early mammalian evolution. “They are one of the defining groups of mammals,” Rougier said.

A new study challenges our preconceived notions about the evolution of brain size in animals ... The research shows notable differences between various groups of animals. Primates, rodents, and ...

Exceptionally well-preserved fossils from the Cambrian period have helped fill a gap in our understanding of the origin and evolution of major animal groups alive today. Algae and bacteria were on the ...

Exceptionally well-preserved fossils from the Cambrian period have helped fill a gap in our understanding of the origin and evolution of major animal groups alive today. A new analysis of fossils ...

but they typically focus on animals separated by, at most, tens of millions of years of evolution, as opposed to the hundreds of millions of years examined with this study. "Most people wouldn't ...

The research, based on fieldwork carried out in the Nama Group ... for complex animal life to appear on Earth has puzzled scientists for a long time. One argument has been that evolution simply ...

but considering the more than 7 million species of animals currently alive, 223 is a relatively small number. "It's actually a fairly rare transition," she said. Most parasite groups evolved ...

The evolution of complexity The traditional view of the issue postulates that the sponges were the first group to diverge from the lineage that gave rise to all other animals -- in other words ...

The eukaryotes undergo major splits: the ancestors of modern plants, fungi and animals split into separate lineages, and evolve separately. We do not know in what order the three groups broke with ...

Another possibility is that homosexuality evolves and persists because it benefits groups ... Evolution always increases fitness). Given that, until recently, homosexual behaviour in animals ...

Figure 2: Gene duplication events do not correlate with the origin of the principal animal groups. Overall, the in silico comparison of the evolution of signalling pathways allows several ...