The 4 eras are Cenozoic era, the mesozoic era, the paleozoic era, and the precambrian era.
Precambrian Era.
Because it was created in the precambrian era...The Candadian Shield was formed in the Precambrian Era.The rocks of the Canadian Shield formed during the Precambrian time.
The ediacaran fauna lived during Precambrian time and became extinct then, too. Nobody knows for sure why, but trilobites might have caused their disappearance.
The Archean Eon, which is part of the Precambrian period along with the Proterozoic Eon.
Lady Gaga
ok im going to start off by saying this, the last answerer is stupid, and doesnt know what he is talking about. it goes from: PERIOD ERA EPOCH there you go ;)
About 540 million years ago.
The Precambrian Era began in the time period 4600 and ended in 570.
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.
Precambrian Era, Paleozoic Era, Mesozoic Era, Cenozoic Era
The 4 eras are Cenozoic era, the mesozoic era, the paleozoic era, and the precambrian era.
Precambrian.
precambrian times
Precambrian Era.
Because it was created in the precambrian era...The Candadian Shield was formed in the Precambrian Era.The rocks of the Canadian Shield formed during the Precambrian time.
The Precambrian ... about 3 billion years.