0
What else can I help you with?
What is a period of earths history that lasted 245 to 208 million years ago?
The period of Earth's history that lasted 245 to 208 million years ago is the Triassic period. This period followed the Permian period and preceded the Jurassic period. It was a time of recovery and diversification of life after the mass extinction at the end of the Permian period.
What geologic period lasted for almost 7 8ths of earth's history?
The geological division that lasted for just over 7/8ths of the Earth's history is the Precambrian Super-Eon. It started 4576.2 million years ago with the formation of Earth and ended 542 million years ago at the start of the Cambrian Period. It is made up of the Hadean, Archean and Proterozoic Eons. Although the super-eon is widely recognised as a time division this is only an unofficial term. The ICS prefer to use the Eon when describing the time before the Cambrian.
What is the last period of the Paleozoic Era?
The last period of the Paleozoic Era is the Permian Period, which lasted from about 299 to 252 million years ago. It ended with the largest mass extinction event in Earth's history, wiping out around 90% of marine species and 70% of terrestrial species.
What percentage of Earth and total history did the Cenozoic period fill?
The Cenozoic era occupies approximately 1.8% of Earth's total history.
Which period of Earth's time would be considered the longest?
The period of Earth's time that would be considered longest is the Precambrian Era.
What is a period of earths history that lasted 245 to 208 million years ago?
The period of Earth's history that lasted 245 to 208 million years ago is the Triassic period. This period followed the Permian period and preceded the Jurassic period. It was a time of recovery and diversification of life after the mass extinction at the end of the Permian period.
Is the devonian a real fish?
The Devonian is not a kind of fish. It was a period in Earth's history that lasted from 416 to 359 million years ago.
As hypothesized by Alfred Wegener what is the history of Earth's continents?
They were joined together, then drifted apart to their current positions
What geologic period lasted for almost 7 8ths of earth's history?
The geological division that lasted for just over 7/8ths of the Earth's history is the Precambrian Super-Eon. It started 4576.2 million years ago with the formation of Earth and ended 542 million years ago at the start of the Cambrian Period. It is made up of the Hadean, Archean and Proterozoic Eons. Although the super-eon is widely recognised as a time division this is only an unofficial term. The ICS prefer to use the Eon when describing the time before the Cambrian.
What is the K-T extinction?
The k-t extinction marks the transition from the cretaceous to the tertiary period in which it is hypothesized that a meteorite struck the Earth and caused a mass extinction.
What is the last period of the Paleozoic Era?
The last period of the Paleozoic Era is the Permian Period, which lasted from about 299 to 252 million years ago. It ended with the largest mass extinction event in Earth's history, wiping out around 90% of marine species and 70% of terrestrial species.
What is hypothesized to be the early source of free oxygen in Earth's atmosphere?
cyanobacteria
Which block of geologic time spans the largest percentage of Earth's history?
The Proterozoic Eon spans the largest percentage of Earth's history, accounting for about 42% of Earth's history. It lasted from around 2.5 billion years ago to 541 million years ago.
What percentage of Earth and total history did the Cenozoic period fill?
The Cenozoic era occupies approximately 1.8% of Earth's total history.
How much of the earths history does the pre-Cambrian era account for?
The Precambrian Super-Eon lasted from Earths creation 4.54 billion years ago until the Cambrian Period 542 million years ago. Some 3.998 billion years. This accounts for about 88% of Earth's history.
When did WW happen?
There have been two world wars in the history of the Earth. The first world war lasted between 1914 to 1918 and the second world war lasted from 1939 to 1945.
How long ago is the hypothesized Theia planetary mass object thought to have grazed Earth?
Roughly 4.5 billion years ago, putting it very early in the history of the Solar System.
