It's thought the final stages of Precambrian time were marked by a prolonged global ice age. This may have led to widespread extinctions, mirroring the bleak endings to the geologic periods that ...

Paleontologists now know that the Precambrian actually did swarm with living creatures, and it was swarming more than 3.85 billion years ago. The earliest evidence of life comes from the ...

More extensive Precambrian finds, particularly those discovered ... Did you know? An ice age is characterized by intervals of repeated glacial advances and retreats, not a single and prolonged ...