That is a good question. Actually the Precambrian is divided into sections. Wikipedia has a good review of its subsections.
The Precambrian era is divided into three subdivisions: the Hadean, Archean, and Proterozoic eons. These subdivisions represent different stages in Earth's early history, from the formation of the planet to the evolution of complex life forms.
The Longest Era of Earths History is Paleoproterozoic Eralasting 900 million years.The largest unit of time in relation to Earth's history is the super-eon. Super-eons are divided into eons. Eons in turn are divided into eras, eras are divided into periods, periods into Epochs and Epochs in Ages.Precambrian Super-Eon (4,600 - 542 Ma)Hadean Eon (4,600 - 3,800 Ma)Archean Eon (3,800 - 2,500 Ma)Eoarchean Era (3,800 - 3,600 Ma)Paleoarchean Era (3,600 - 3,200 Ma)Mesoarchean Era (3,200 - 2,800 Ma)Neoarchean Era (2,800 - 2,500 Ma)Proterozoic Eon (2,500 - 542 Ma)Paleoproterozoic Era (2,500 - 1,600 Ma)Mesoproterozoic Era (1,600 - 1,000 Ma)Neoproterozoic Era (1,000 - 542 Ma)Modern Super-Eon (542 Ma - Now)Phanerozoic Eon (542 Ma - now)Paleozoic Era (542 -251 Ma)Mezozoic Era (251 - 65 Ma)Cenozoic Era (65 Ma - Now)
The Precambrian era was a geological period that spanned from about 4.6 billion years ago to around 541 million years ago. It encompasses the earliest part of Earth's history, including the formation of the planet and the evolution of life forms. The Precambrian era was followed by the Paleozoic era, which marked the beginning of complex life on Earth.
Precambrian time - The period in the geologic time scale from the formation of the Earth to the beginning of the Palezonoic era, from about 4.6 billion to 543 million years ago.
The Precambrian Super-Eon is the informal name for the time on earth before the Cambrian Period. It lasted from 4,576 millions years ago until 542 million years ago, about 4.034 billion years.No geological era lasted as long. The longest era was the Paleoproterozic Era(2,500 - 1,600Ma) which lasted 900 million years.
Precambrian
4,028,000,000 years.
there are different periods in each era. In the Cenozoic era, there are 2 periods, Quaternary and Tertiary. Mesozoic era has 3 periods, Cretaceous, Jurassic, and Triassic. Paleozoic has 7 periods, Permian, Carboniferous, Devonian, Silurian, Ordovician, and Cambrian. Precambrian is just the present, no time periods in it.
The two basic divisions following the Precambrian on the geologic time scale are the Paleozoic Era and the Mesozoic Era. These eras are further divided into periods, such as the Cambrian, Devonian, and Permian in the Paleozoic Era, and the Triassic, Jurassic, and Cretaceous in the Mesozoic Era.
The Archean Eon, which is part of the Precambrian period along with the Proterozoic Eon.
The divisions of the geologic time scale are divided into four eras. from earliest to closer to the present is the Precambrian, Paleozoic, Mesozoic, Cenozoic. During these time periods, there were several major evolutionary events. Most commonly known are the dinosaurs and humans. Hope that helped :)
The Precambrian era is divided into three subdivisions: the Hadean, Archean, and Proterozoic eons. These subdivisions represent different stages in Earth's early history, from the formation of the planet to the evolution of complex life forms.
precambrian era, paleozoic era, mesozoics era, cenozoic era
Archeozoic and ProterozoicThe two periods of the Cenozoic Era are the Tertiary and the Quatemary.
The Phanerozoic Eon is divided into three major eras: the Paleozoic Era, the Mesozoic Era, and the Cenozoic Era. The Paleozoic Era is further divided into six periods: Cambrian, Ordovician, Silurian, Devonian, Carboniferous, and Permian. The Mesozoic Era is divided into three periods: Triassic, Jurassic, and Cretaceous. The Cenozoic Era is divided into two periods: Paleogene and Neogene.
It's not a brilliant question you haven't said what scale you're looking at - Cosmic, Geologic, etc,Geological time is divided as follows:Hadean 800 million yearsArchean 1300 million yearsProterozoic 1958 million yearsPhanerozoic 542 million years Paleozoic 291 million yearsMesozoic 184.5 million yearsCenozoic 66.5 million years Cretaceous PaleoceneEoceneOligocenePaleogeneNeogene MiocenePlioceneQuaternary PleistoceneHoloceneThe Earth is over 4.5 billion years old, We live in the Holocene Epoch of the Quatenary Period of the Cenozoic Era of the Phanerozoic Eon
they were the cretatious triassic and jurassic