NATS 1540 Study Guide - Midterm Guide: Red Algae, Hematite, Stromatolite
Document Summary
World"s oldest fossils found in canada: nicola davis. Scientists say they have found the world"s oldest fossils, thought to have formed between. 3. 77bn and 4. 28bn years ago: big discrepancy, life as we define as today might not be the life" they have found at that time. If correct, these fossils offer the oldest direct evidence for life on the planet. Australia dating to about 3. 46 bn years ago, hot debate. Frances westall-expert on ancient fossil bacteria at the french national centre for scientific research. The thing that bothers me the most about these structures is the fact that they are all seem to be extremely oriented. Other remain cautious if more optimistic, structures do not look like what would be expected from modern bacteria, i don"t think there is a smoking gun here that says this is clearly biological. Fossils from 1. 6 billion years ago may be oldest-known plants.
