they were the first dinosaurs on earth we think
The first prehistoric birds appeared 65-245mya
Birds and sea creatures.
they were first noticed millions of years ago during the dinosaur time
duringthe time of the dinosaurs
They evolved in the Mesozoic Era
In the beginning of the world they were flightiness.
The first birds are thought to have appeared in the late Jurassic period, between 150 and 200 million years ago. Modern duck species have traits that are closer to some theropods (dinosaurs) than are most land-based birds.
in the Mesozoic era (in the Jurassic period)
Dinosaurus were the first reptiles on earth.
the paleontogists believe that cathaymyrus was the first appear in the eon(on earth)
I think when earth was cover in water.
ummm i dont know
Igneous rock was the first to appear on the planet.
ADAM AND EVE FIRST WALKED THE EARTH
Err... I guest Sonic was the first appear in 1991.