Oldest fossils

|     1:47    |     NEWS    | Are These the Oldest Fossils Ever Found? Take a look at what could be the oldest form of life ever found on Earth. These microfossils from Canada may date back over 4 billion years. For reference, the earliest Homo sapiens fossils are thought to be about 300,000 years old, and the oldest dinosaur fossil may only be 245 million years old. Looking at the images, it's hard for me to even see these red tubes as remains of living things, but research shows that the cells may have been capable of biological processes. —Jim Burch, associate producer WATCH NOW