The oldest period is the Triassic period.
The oldest dinosaur was alive in the triassic period and is called the Melanorosaurus.
The oldest dinosaur is the T-rex!
The oldest reptile was a dinosaur. But now a frog is the oldest reptile.
Thecondasaurus
DINOSAUR
The oldest known dinosaur is Eoraptor. It was found in Argentina and dates to about 231.4 million years ago.
The oldest living dinosaur was the Staurikosaurus. It lived about 220 million years ago!
The Oldest known dinosaurs fossils are prosauropods found in Madagascar. They date to about 230 Million Years Ago in the Late Triassic Period. It was from the same family of dinosaurs that became Apatasaurus and Diplodocus. Previous to this the oldest dinosaur was a Eoraptor found in Argentina. This dates back to about 228 Million Years.
The oldest dinosaur fossils known to man date back to the late Triassic Period about 230 Million Years Ago.
The Eoraptor.
The oldest fossil of someone belonging to the human genus is that of Homo habilis, which dates to 2.5 million years ago. The oldest fossils of the modern human species date from about 130,000 years ago.
the trex beause it is the king of the dinosaurs