Mesozoic
Forests have been around for millions of years, with the first forests appearing during the Devonian period, around 400 million years ago. These early forests consisted mainly of tall trees like ferns and early seed plants.
Water first appeared on Earth during the Hadean Eon, which occurred around 4.6 to 4 billion years ago. This was before the Precambrian era, which began about 4 billion years ago.
The Devonian era is a geological period that occurred approximately 419 million to 359 million years ago. It is known for the diversification of marine life, including the appearance of early fish and amphibians, as well as the spread of forests on land.
Bacteria are believed to have first appeared on Earth over 3.5 billion years ago during the Archean Eon. These simple single-celled organisms are among the earliest forms of life on our planet.
A long freaking time ago :) The first forests were established by 375 million years ago. The first ones akin to modern forests with trees up to 60 feet high began by 360 mya (during the late Devonian Period).
Forests have been around for millions of years, with the first forests appearing during the Devonian period, around 400 million years ago. These early forests consisted mainly of tall trees like ferns and early seed plants.
probably mesozoic era
Vertebrates first appeared during the Paleozoic era.
the cenozoic era
Pre-Cambrian. It's when bacteria first came about.
Actually they were from the Pennsylvanian Period and the Paleozoic Era...
Silurian
The Cenozoic era at about 65 million years ago. The Paleogene period.
9500 BC. When the switch between the Paleolithic Era to the Neolithic Era began.
Forests of ferns and cycads primarily appeared during the Mesozoic Era, specifically in the Triassic period, around 250 million years ago. This era is often referred to as the "Age of Cycads" and saw the dominance of these plants alongside ferns in many terrestrial ecosystems. The warm, humid climate of the Mesozoic provided ideal conditions for their proliferation.
Reptiles first appeared during the Paleozoic Era, specifically the Carboniferous System of the Paleozoic Era. That was about 320 million years ago.
before time even started when mesopotamians were alive.