Precambrian
The Cenozoic Era is the most recent geologic era and has lasted for around 65 million years, making it the longest era to date. During this era, mammals diversified and dominated the Earth's ecosystems.
Eon, Era, and Epoch: APEX :D
The order of units of geologic time from longest to shortest is: eon, era, period, epoch.
eon>era>period
The Precambrian era spanned approximately 4 billion years, making it the longest geologic time period in Earth's history.
Era
The Cenozoic Era is the most recent geologic era and has lasted for around 65 million years, making it the longest era to date. During this era, mammals diversified and dominated the Earth's ecosystems.
The Precambrian Era is the longest era with the least amount of scientific information available. This is because so few fossils have been discovered.
The earliest era of prehistory was also the longest. The Stone Age lasted from around 25,000 years to ago to about 5,500 years ago.
precambian
precambrian times
Precambrian Era.
The Precambrian is actually the longest block (division) of time in earth geological history. But the Paleozoic era is the longest of the three "eras". The paleozoic era started about 550 million years ago and is marked by the appearance of abundant invertebrate life in the oceans. The paleozoic era ended about 225 million years ago with the forming of the supercontinent Pangaea.
Eon, Era, and Epoch: APEX :D
Precambrian
C - PALEOZOIC ERA
The order of units of geologic time from longest to shortest is: eon, era, period, epoch.