An international team of paleontologists has discovered that Limusaurus inextricabilis, a species of Jurassic dinosaur, lost its teeth in adolescence and did not grow another set as adults. Limusaurus inextricabilis is the only known reptile to lose its teeth and form a beak after birth. Image credit: Yu Chen. Limusaurus inextricabilis (‘mire lizard who could not escape’) is a ceratosaurian theropod dinosaur that lived during the Upper Jurassic...
