The bird has a short tail ending in a pygostyle, an important aerodynamic innovation moving the center of mass forward toward the wings. A 150 million-year-old fossil reveals early bird ...

The study pushes back the appearance of an important avian feature, represented by the pygostyle, by nearly 20 million years. The fossil, discovered in November 2023, was identified as a bird ...

Its short tail ends in a compound bone called the pygostyle, a feature uniquely present in modern birds. This indicates that the body structure of modern birds emerged in the Late Jurassic Period ...

Its short tail ends in a compound bone called the pygostyle, a feature uniquely present in modern birds. This indicates that the body structure of modern birds emerged in the Late Jurassic Period ...