that's like saying what are the role of humans on earth or bears or whatever. they have no roles but to survive, evolve and do whats in their nature.
Throughout the Mesozoic era the roles mammals could take on was limited because many of those roles were already filled by dinosaurs. After the extinction event that competition was removed and the mammals could take on new roles.
HA! there are no genetic mutations! DINOSAURS ARE DINOSAURS! DINOSAURS ARE DINOSAURS! no mutants
Dinosaurs Dinosaurs Dinosaurs - 1985 TV was released on: USA: 1985
Both dinosaurs and trees are ancient living organisms that have existed on Earth for millions of years. They are part of the planet's evolutionary history, contributing to ecosystems and biodiversity. Additionally, many trees, particularly conifers, have coexisted with dinosaurs, and some species of trees, like ginkgoes, have survived since the time of dinosaurs. Both play crucial roles in their environments, with trees providing oxygen and habitat, while dinosaurs were key components of their ecosystems.
Platypuses are not dinosaurs; nor are they related to dinosaurs.
Sharks are Sharks and dinosaurs are dinosaurs. But there were animals recognizable as Sharks living when the dinosaurs did.
Young dinosaurs would have been called hatchlings. If you are asking what evolved from dinosaurs, the only descendants of dinosaurs are the birds.
Most dinosaurs were herbivores. There was a wide variety or carnivorous dinosaurs, though, and all herbivorous dinosaurs evolved from the earliest carnivorous dinosaurs. Birds are descendants of carnivorous dinosaurs.
Dinosaurs never flew dinosaurs were land reptiles although some dinosaurs could swim
No. Turtle are from a branch of reptiles completely separate from dinosaurs.
No. Dinosaurs evolved from reptiles. Birds evolved from dinosaurs.
There were mammals living alongside the dinosaurs, but the dinosaurs were not mammals.