Likewise, I’m quite curious to know how claw scrapes created by tigers differ from those left by other cats, birds of prey, and other clawed vertebrates, as well as how scratches created by ...

With just claw scratches on the river bottom to go with, Persons says the exact identity of the paddling dinosaur can't be determined, but he suspects it could have been an early tyrannosaur or a ...

With just claw scratches on the river bottom to go with, Persons says the exact identity of the paddling dinosaur can't be determined, but he suspects it could have been an early tyrannosaur or a ...