THE FIRST LIFE ON EARTH:
Precambrian Era:
• Hadean Eon: The Birth of Earth, and Volcanos and Lava.
• Archean Eon: Land and Water, and Early Life the very first Cells.
• Proterozoic Eon: Microscopic Life, and the very first Invertebrates.
Paleozoic Era:
• Cambrian Period: Age of Invertebrates, Trilobites, Arthropods, and very first fishes.
• Ordovician Period: Age of Corals, Nautilus, Cephalopods, and Early Fishes.
• Silurian Period: Primitive Sea Scorpions, Primitive Jawed fishes, and the very first plants.
• Devonian Period: Age of Fishes, very first Trees, and very first Amphibians.
• Carboniferous Period: Age of Amphibians, giant Insects, and very first Reptiles.
• Permian Period: Early Primitive Reptiles, Mammal-like Reptiles, and mass extinction of Trilobites.
Mesozoic Era:
• Triassic Period: Age of Reptiles, very first Mammals, and very first Dinosaurs.
• Jurassic Period: Age of the Dinosaurs, Sea Marine Reptiles Early Mammals, and very first Birds.
• Cretaceous Period: Very first Flowers, Early Birds, Last Dinosaurs, mass extinction of the Dinosaurs, and small mammals survived.
Cenozoic Era:
• Paleogene Period: After Dinosaurs, Age of Mammals and Large Primitive Birds.
• Neogene Period: Large Primitive Mammals, and Ape-like humans the Ape-men.
• Quaternary Period: Very first Humans the Cavemen, and the Ice Age of Primitive Mammals.
• Present Day: Age of Humans and Modern Animals rules the Earth.
#GeologicTimeScale:
#PRECAMBRIAN ERA:
#Hadean.
#Archean.
#Proterozoic.
#PALEOZOIC ERA:
#Cambrian.
#Ordovician.
#Silurian.
#Devonian.
#Carboniferous.
#Permian.
#MESOZOIC ERA:
#Triassic.
#Jurassic.
#Cretaceous.
#CENOZOIC ERA:
#Paleogene.
#Neogene.
#Quaternary.
#PresentDay.
#prehistoric #geologic
