Encyclopedia > Paleoproterozoic

Article Content

Paleoproterozoic

The Paleoproterozoic is the first of the three sub-divisions of the Proterozoic. This is when the continents first stabilized. This is also when the atmospheric oxygen increased. Cyanobacteria were responsible for the increase.

All Wikipedia text is available under the terms of the GNU Free Documentation License

Search Encyclopedia

Search over one million articles, find something about almost anything!

Featured Article

Sanskrit language

... r, l, v. All of these but r have nasalized forms. Sanskrit also has palatal, retroflex, and alveolar sibilants. Rounding out the consonants are the voiced and voiceless h ...