after the Earth had thawed from the Cryogenian period's extensive glaciation.
The biota largely disappeared with the rapid increase in biodiversity known as the Cambrian explosion.
This caused the formation of the Appalachian Mountain Range. It was made up of South America, Africa, Antarctica, India and Australia.
These two large land masses lay close to one another near the equator.
Most plants are terrestrial (meaning that they live on land).
They are generally incapable of moving around, and so are totally dependent on the atmosphere and the soil or rock (substrate) on which they grow.
Fossils are formed when minerals in groundwater replace materials in bones and tissue, creating a replica in stone of the original organism or of their tracks.
Dinosaur bones, on the other hand, are millions of years old -- some fossils are billions of years old.2) and document its environmental tolerance, its relationship with the environment (its Miocene (5 million to 23 million years ago) of the Rhine area of Germany.; formerly Vendian) biota consisted of enigmatic tubular and frond-shaped, mostly sessile organisms that lived during the Ediacaran Period (ca. Trace fossils of these organisms have been found worldwide, and represent the earliest known complex multicellular organisms.The oldest fossils (of bacteria) are 3.8 billion years old.The most widely known form of radiometric dating is carbon-14 dating.