While other alvarezsaurids

similar to today's African savannah

thanks to its large eyes adapted to night vision

which provided protection from predators and facilitated the care of young

an evolutionary phenomenon common in isolated ecosystems with limited resources

Phorusrhacos longissimus Daspletosaurus While other alvarezsauridsPhorusrhacos longissimus is a flightless bird that lived during the Miocene, between 20 and 15 million years ago, in what is now South America. Belonging to the terror bird family (Phorusrhacidae), this predator was notable for its large size and terrifying appearance. Phorusrhacos was approximately 2. 5 meters tall and weighed around 130 kilograms, making it one of the top predators of its time. The skull of Phorusrhacos was large and robust, with an