Fussy fishPosted: February 28, 2012
Current science believes that the Universe began about 13.7 billion years ago. The earth came to existence about 4.5 billion years ago, with the first basic forms of life starting a mere 3.8 billion years ago. Our friends the humble fish appeared about 500 million years ago and mammals only 65 million years ago. Here’s a visual timeline of evolution I found.