Back Paleoproterosoïkum Afrikaans حقبة الطلائع القديمة Arabic Lekeproterozugal AVK Paleoproterozoy Azerbaijani Палеапратэразой Byelorussian Палеопротерозой Bulgarian Paleoproterozoeg Breton Paleoproterozoik BS Paleoproterozoic Catalan Paläoproterozoikum German
The Palaeoproterozoic was the first era of the Proterozoic eon. It came after the Archaean eon, and lasted from 2500 to 1600 million years ago (mya).
In the Palaeoproterozoic, there was a huge production of stromatolites by cyanobacteria. The first unicellular eukaryote organisms also appeared in the fossil record.
The first supercontinent grew, and some of the rocks were normal sedimentary rocks, not metamorphosed.