144 to 65 million years ago
It is fossil fuels.
150 millions years ago Earth was in the late Jurassic period.
The Jurassic Period of geologic time spanned from 206 to 144 million years ago. It was preceded by the Triassic Period and followed by the Cretaceous Period, all three comprising the Mesozoic Era.
Land plants first appeared in the Silurian period. This period took place during the Paleozoic Era. This was 438 million years ago.
We are in the Quaternary period now (Holocene Epoch). So it hasn't ended yet.
depends on what era and period it lives in for example: tyrannosaurus rex is top predator in the late cretaous
145 million years ago.
The Jurassic Period is defined as the period of time between 200 million years ago to 145 million years ago.
The Jurassic period ended 145+/- 4 million years ago. It took place between the Triassic period and the Cretaceous period.
Long ago or old
The Devonian Period lasted from about 395 to 345 million years ago. It is part of the Paleozoic Era.
At the start of the Camrbian period, roughly 542 million years ago.
At the start of the Camrbian period, roughly 542 million years ago.
At the start of the Camrbian period, roughly 542 million years ago.
The Carboniferous is considered to have started 354 million years ago and ended 290 million years ago.
a long time ago
It is fossil fuels.