Intracellular endosymbionts that originally descended from free-living prokaryotes have been important in the evolution of eukaryotes by giving rise to two cytoplasmic organelles. Mitochondria ...

A research team has created a comprehensive evolutionary tree of all bird species, integrating data from hundreds of studies ...

The earliest reptile footprints were found by two amateur paleontologists in Australia. The post Amateur fossil hunters find ...

New discoveries of fossil clawed footprints from Australia, published in Nature, push the origin of reptiles back in time by ...

Researchers have combined decades of scientific data, tracing how all birds are related. This provides an evolutionary map ...

Cheddar Man lived around 10,000 years ago. The story of human evolution is not one of neat, linear progression with a concrete beginning and end. Instead, it is a tale of a family tree whose complex ...

By combining data on all known bird species, this tree is the most impressive snapshot yet of one of Earth’s most ...

Researchers at UC Merced and Cornell University have developed a dynamic open-access database that maps the entire evolutionary history of every species of bird on Earth.

The study found that bird species who nest in tree cavities have independently evolved heightened aggression across lineages, particularly in females.

Birds are the most diverse land vertebrate on the planet, and now scientists have constructed a complete evolutionary tree of the 11,000 or so known species. This data came from hundreds of ...