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When life originated on Earth is still a hotly debated in science. The evidence available was from already fairly complex bacteria. These bacteria must have evolved from more simple life forms but little or no evidence exists to confirm this.
The first conclusive evidence for life comes from the Neoarchean Era(2,800 - 2,500Ma) about 2.74 billion years ago.
However there is evidence that there was bacteria alive in the Paleoarchean Era(3,600 - 3,200Ma) about 3.45 billion years ago.
What else can I help you with?
What is the geological time period of a velociraptor?
Velociraptor fossils date to between 75 and 71 million years ago. That was during the Campanian and then the Maastrichtian stages of the Cretaceous period.
In which geological period did Cows first appear and what were they descending from?
Cows first appeared in the Miocene Epoch, part of the Neogene Period in the Cenozoic Era. (current era) The Miocene Epoch started 23 million years ago and ended 5 million years ago, and many different grazing species developed during this time period.
When did horseshoe crab originate?
Horseshoe crabs first appeared around 450 million years ago during the Ordovician period, making them one of the oldest living species on Earth.
Fossils of fish appeared approximately 500 mya during the what?
Fossils of fish appeared approximately 500 million years ago during the Cambrian period. This period saw the rapid diversification of life forms in the oceans, including the development of early fish species.
Which type of organism appeared for the first time during the Cambrian period?
Trilobites
What geological time period did the cryloposaurus live?
Cryolophosaurus lived during the Yo Mama period
The first forests of trees appeared during the?
The period, you mean? They first appeared during the Devonian Period.
Which period on the geological time scale are we currently living?
We are living in the Holocene Epoch of the Quaternary Period in the Cenozoic Era of geologic time.
What is meaning of contemporaneous?
Were living during the same period of history.
What is geological scale?
The geological time scale organizes a long period of time.
What is the current geological period called?
We are currently in the cenozoic period.
What were the dominant organisms living in the vendian time period?
Metazoans were abundant during the Vendian Period.
What Mammals first appeared during the .?
Triassic Period! :)
What is the Homo Sapien time period?
Homo sapiens, the species to which modern humans belong, first appeared around 300,000 years ago in the Middle Paleolithic. We are currently living in the Holocene epoch, which began around 11,700 years ago, marking the most recent geological time period in Earth's history.
What were the dominant organisms living during the triassic period?
Adam And Eve
What were the dominant organisms living during the permian period?
a shark and a snail
In which Geological era did early man appear first?
Early man first appeared in the Cenozoic Era, specifically during the Quaternary Period. This era began around 2.6 million years ago and continues to the present day.
