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During the Mesozoic Era, which spanned from about 252 to 66 million years ago, atmospheric oxygen levels were relatively high, fluctuating between 25-30% at various points. This was beneficial for the diverse range of life forms, including large dinosaurs and flowering plants, that thrived during this time. The era saw significant biological productivity, especially in the oceans and on land, contributing to the oxygen levels. By the end of the Mesozoic, oxygen levels began to decline, setting the stage for the evolutionary changes in the subsequent Cenozoic Era.
What else can I help you with?
Which was NOT a subdivision of the Mesozoic era?
The Cenozoic era was not a subdivision of the Mesozoic era. The Mesozoic era is subdivided into the Triassic, Jurassic, and Cretaceous periods.
Did mesons strike Mesopotamia in the Mesozoic Era?
Mesozoic Era
Which is not an era of the phanerozoic era?
The Paleozoic precedes the Mesozoic. And our current era, the Cenozoic, follows the Mesozoic.
Name 3 types of life forms that appeared in the mesozoic era?
the first type of life form that appeared in the mesozoic era was a fish! the second type of life form that appeared in the mesozoic era was the reptile! and the third was a reptile bird!!!!!!!!!!!!!!!!
What are the four geologic time scale eras from oldest to most recent?
The 4 eras are Cenozoic era, the mesozoic era, the paleozoic era, and the precambrian era.
Was there oxygen in the Mesozoic Era?
Yes, the atmosphere was more than adequately oxygenated for life in the Mesozoic.
What are some atmospheric conditions during the mesozoic era?
low oxygen levels
Which was NOT a subdivision of the Mesozoic era?
The Cenozoic era was not a subdivision of the Mesozoic era. The Mesozoic era is subdivided into the Triassic, Jurassic, and Cretaceous periods.
Did mesons strike Mesopotamia in the Mesozoic Era?
Mesozoic Era
What is the period of the mesozoic era?
The Paleozoic precedes the Mesozoic. And our current era, the Cenozoic, follows the Mesozoic.
Jurassic is the period of what era?
It really wasn't an era. An Era was a much longer period of time. It was called the "Jurassic Period".
What is the Mesozoic era referred to as the?
The Mesozoic Era is known as the Age of Reptiles.
What Era did dinosaurs live in?
The dinosaurs lived in the Mesozoic Era, which includes the Triassic, Jurassic, and Cretaceous periods. The first dinosaurs appeared in the late Triassic and went extinct at the end of the Cretaceous.
Which is not an era of the phanerozoic era?
The Paleozoic precedes the Mesozoic. And our current era, the Cenozoic, follows the Mesozoic.
The Cretaceous period was a part of what era?
It was part of the Mesozoic Era.
What life-forms dominated the mesozoic era?
Dinosaurs dominated over the mesozoic era.
What is the other name for the mesozoic era?
The Mesozoic Era is also known as the Age of Reptiles.
