The Precambrian Period lasted for about 4 billion years and ended about 600,000,000 years ago. It is the earliest geological period and is divided into the Archaeozoic and Proterozoic epochs. It was during this time that earliest forms of life were assumed to be just starting off on earth. The fossil record does not extend back that far, but it would be reasonable to assume that some basic plant life and single cell life forms did not evolve any further.
Cyanobacteria existed during the Archean Era. Some sites may say stromatolites but in truth, stromatolites are simply structures formed by the cyanobacteria.
First of all evolution doesen't work there's to many problems second of all what the heck is Archean
The ediacaran fauna lived during Precambrian time and became extinct then, too. Nobody knows for sure why, but trilobites might have caused their disappearance.
The ediacaran fauna lived during Precambrian time and became extinct then, too. Nobody knows for sure why, but trilobites might have caused their disappearance.
The ediacaran fauna lived during Precambrian time and became extinct then, too. Nobody knows for sure why, but trilobites might have caused their disappearance.
The atmosphere, during the Precambrian became richer in oxygen caused by a bacteria called cyanobacteria.
Many of the animals began to die off and became extinct.
jellyfish-like animals, sea pen, and bacteria.
It is very empty and only single-celled organisms were present in the Precambrian era. No animals were living on land because of the poisonous gas in the air.
The hyenadon became extinct during the start of the Oligocene. There was a mas extinction event that was called Grande Coupure and causes temperatures to decline and killed many species of animals.
During the precambrian.
life arose and the atmosphere became enriched in oxygen
A pteranodon is a pterosaur, or a flying dinosaur. During the fall of the dinosaurs, all dinosaurs became extinct, including the pterosaurs.
the megatherium went extinct about 8,000 years ago