scitechdaily.com
The Fossil Record May Be Missing 200 Million Years of Animal History
By the time animals left their first unmistakable fossils, they may already have had up to 200 million years of evolutionary history behind them. A fossil deposit in Mongolia preserves microscopic organisms in extraordinary detail, down to cells inside specimens that resemble embryos. Yet none of the fossils examined can confidently be identified as an [...]
New Posts (Home)
ChatBox
Popular Posts 
Game Zone
Top PodCasts
