The Oldest Fossil Organisms Presently Known Have Been Dated at Approximately

Question

The oldest fossil organisms presently known have been dated at approximately how many years old?
A) 1.7 billion
B) more than 4.5 billion
C) 3.4 billion
D) less than 1.7 billion
E) 4.5 billion

Accepted Answer

The oldest known fossil organisms are stromatolites, which have been dated to approximately 3.4 billion years old.