The Mesozoic Era
No no no the first shark appeared in the jurassic period.
Dinosaurs appear in the fossil records in the late triassic period about 230 million years ago and became extict (except birds)at the end of the cretaceous period 65 million years ago.
Dinosaurs and ammonoids appeared in the Triassic period.
The oldest dinosaur fossils known to man date back to the late Triassic Period about 230 Million Years Ago.
No, dinosaurs did not appear until the Mesozoic Era, which followed the Paleozoic Era. Dinosaurs first appeared around 230 million years ago at the start of the Triassic period. The Paleozoic Era ended around 252 million years ago.
Dinosaurs and ammonoids appeared in the Triassic period.
The earliest period that dinosaurs existed was the Triassic period, some 225 million years ago. These were not the huge dinosaurs of the later period. Most dinosaurs of that age were small creatures that ate meat and walked on hind legs. Shaaron
the period is teritary the period after dinosaurs
the best time of dinosaurs was the jurassic period where big sauropods ruled the earth ,late in the cretaceous period some species of dinosaurs were in decline before the hit of the meteorite that killed all dinosaurs
The T-Rex and Triceratops. The extinction of the dinosaurs marked the end of the cretaceous period.
The first birds appeared during the Jurassic period, around 150 million years ago. They are believed to have evolved from small theropod dinosaurs.
The fossil records for dinosaurs end during the late Cretaceous period. This means that their numbers dwindled so low as to not leave fossil evidence. Their true extinction most like followed quickly. This is picky, I admit, but since you asked what ERA ended the dinosaurs, I suppose you should have the answer. They died out at the end of the Mesozoic Era (which was, as noted above, also the end of the Cretaceous Period). However, many scientists no classify birds as dinosaurs, in which case they never fully became extinct.