Evolutionary Biology

Parasitic deer keds reduce their visual sensitivity by half after finding a host, shedding their wings and conserving energy for parasitic life functions.

A new study reveals that chimpanzees and bonobos form social networks similar to human friendship circles, with close inner groups and broader connections.

Scientists discovered *Labrujasuchus expectatus*, a Triassic crocodile relative that walked on two legs, had tiny arms, and a toothless beak, resembling an ostrich-like dinosaur.

Scientists used DNA from museum specimens to identify the extinct Seychelles crocodiles as an isolated population of saltwater crocodiles, solving a 250-year-old mystery.

Scientists used advanced imaging to study a 380-million-year-old fish skull, revealing adaptations that shed light on how animals transitioned from water to land.

A new giant dinosaur species, *Bicharracosaurus dionidei*, found in Argentina, offers new insights into Jurassic sauropod evolution in the Southern Hemisphere.

Scientists discovered a microscopic pond organism with a unique genetic code, reassigning stop signals and challenging assumptions about gene translation.

New research suggests that the size of eggs laid by ancient marine creatures may explain why ammonites went extinct while nautiloids survived the asteroid impact that ended the Cretaceous period.