What are mosasurus?

What unanswered questions scientist have on dinosaurs? What are Ruffnut and Tuffnut's dragon's names? Why do turtles live and dinosaurs doesnt? How do you make a dinosaur over text? Was the Velociraptor before or after the ice-age? What is the meaning of diin? Which era did dinosaurs live? What does the dinosaur named minmi means? Did pterodactyls hunt alone? What does the name iguanodon mean? Were cavemen arround during the dinosaur age? How much hp does dusknoir have in explorers of time? How fast does the t-rex motorcycle goes? What us the difference between an ornithischian and saurischian? Do dragonflies have hollow bones? How is dinosaur's body covered with? What is komdo dragons enemies? How many dinosaurs were on the earth long time ago? Does a dinosaur have a tongue? What is pen called in Hindi?