Duonychus was a medium-sized member of a group of awkward-looking dinosaurs called therizinosaurs, which were known for ...

kept that toe’s enlarged and recurved claw from getting dulled as the animal walked. Consequently, it stayed lethally sharp,” explained Persons. For context, a velociraptor was a dinosaur ...

When they caught up to prey, these predators likely brought them down quickly with a long, 3.5-inch (9-centimeter) retractable claw on each foot and a mouth full of sharp teeth. Velociraptor is ...