Sedimentary rock

• Massive, computer-analyzed geological database reveals chemistry of ancient ocean (15 Aug 2018)
  
• Researchers discover new fundamental property of rocks (07 May 2016)
  
• Earliest known fossil of the genus Homo dates to 2.8 to 2.75 million years ago (16 Apr 2016)
  
• How Do Fossils Form? (27 Sep 2015)