-
251,000 BCE
Phanerozoic
The era was Mesozoic and the period was Triassic in that time was the first dinosaurs -
250,000 BCE
Proterozoic
simple multicellular sea creatures develop , algae and plankton develop, eukaryotic cells develop -
199,600 BCE
Phanerozoic
The era was Mesozoic and the period was Jurassic in that epoch had giant dinosours -
145,500 BCE
Phanerozoic
The era was Mesozoic and the period was Cretaceous in that epoch it was the mass extinctions -
54,200 BCE
Phanerozoic
The era was Paleozoic and the period was Ordovician and Cambrian it has trilobites abundant and suddent explosion of live -
53,000 BCE
Phanerozoic
The era was Cenozoic and the period was Tertiary and had Pliocene epoch, Miocene epoch,Opligocene epoch,Eocene epoch and Paleocene epoch -
44,370 BCE
Phanerozoic
The era was Paleozoic and the period was Mississippian, Devonian and Silurian and has amphibians spread ,fresh water fish and land colonized by arthropods and plants -
40,000 BCE
Archean
Earth becomes habitable ; spontaneous generation of first cells; rise of bacteria and cyanobacteria -
40,000 BCE
Hadean
Formation of earth -
29,900 BCE
Phanerozoic
The era was Paleozoic and the period was Permian and Pennsylvanian and had modern insect and giant insects -
11,477 BCE
Phanerozoic
The era was Cenozoic and the period was Quaternary that was recent epoch and pleistone epoch
