Dinosaurs are not ancestors to any other group of reptiles than modern birds (if you would choose to define them as reptiles), but themselves evolved from earlier forms, in parallel to the reptiles that became mammals, those who became lizards and snakes, turtles and other groups.
What came first dinosaurs or reptiles?
The origin of the reptiles lies about 320–310 million years ago, in the swamps of the late Carboniferous period, when the first reptiles evolved from advanced reptiliomorph labyrinthodonts.
How are reptiles related to dinosaurs?
Archosaurs were the ancestors of dinosaurs and crocodiles, but they were only distantly related to modern snakes, lizards, and turtles, groups that had split off at different times. So birds aren’t just closely related to dinosaurs, they really are dinosaurs!
What did the dinosaurs evolve from?
Dinosaurs evolved from other reptiles (socket-toothed archosaurs) during the Triassic period, over 230 million years ago. Dinosaurs evolved soon after the Permian extinction, which was the biggest mass extinction that ever occured on Earth. During this time (the Triassic period), the mammals also evolved.
What animals come from dinosaurs?
It’s Unbelievable What Modern Animals Were Alive Alongside The Dinosaurs
- Echidnas. factzoo. These spiky anteaters were known to dwell on Earth way back in the Cenozoic Era.
- Sharks. wikipedia.
- Lancetfish. bilzrockfish.
- Caiman. londolozi.
- Bees. southcarolina.
- Lampreys. holykaw.
- Tuatara. rainbowsprings.
- Crabs. softpedia.