120-million-year-old toothless bird fossil Imparavis attenboroughi, from enantiornithines group, challenges understanding of avian evolution.

120 million-year-old fossil reveals a toothless bird species, Imparavis attenboroughi, challenging researchers' understanding of avian evolution. Named in honor of Sir David Attenborough, it belonged to the diverse enantiornithines group, known for their unique shoulder joint feature and teeth. This finding highlights the varied evolutionary paths of birds that initially descended from dinosaurs.