Pre-Cambrian. It's when bacteria first came about.
Pre-Cambrian. It's when bacteria first came about.
The era that marks a significant increase in the complexity of life, particularly with the diversification of marine life and the emergence of plants on Earth, is the Paleozoic Era. This era began around 541 million years ago with the Cambrian Period, known for the "Cambrian Explosion," when many phyla of marine organisms rapidly evolved. The Paleozoic also saw the first land plants appear, contributing to the complexity of ecosystems.
Mammals first appear in the fossil record of the Mesozoic Era.
the first type of life form that appeared in the mesozoic era was a fish! the second type of life form that appeared in the mesozoic era was the reptile! and the third was a reptile bird!!!!!!!!!!!!!!!!
Cycads first appeared in the fossil record during the early Permian period, around 280 million years ago. They are often referred to as "living fossils" due to their ancient lineage and resemblance to plants from that era.
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.
The Archean.
Reptiles first appeared during the Paleozoic Era, specifically the Carboniferous System of the Paleozoic Era. That was about 320 million years ago.
The era that marks a significant increase in the complexity of life, particularly with the diversification of marine life and the emergence of plants on Earth, is the Paleozoic Era. This era began around 541 million years ago with the Cambrian Period, known for the "Cambrian Explosion," when many phyla of marine organisms rapidly evolved. The Paleozoic also saw the first land plants appear, contributing to the complexity of ecosystems.
Life first appeared on land around 500 million years ago during the Ordovician Period. Plants and some arthropods were among the first organisms to colonize terrestrial habitats, followed by amphibians and eventually reptiles.