Evolution of life on Earth (PowerPoint)

					 Evolution of life on Earth




4,500 million years of evolution
          Evolution of life on Earth

Earth takes shape                                    Earth today
                                                  4,500 million years




    00:00           06:00      12:00        18:00           24:00


            Evolution of life on Earth as a 24 hour clock
    Evolution of life on Earth


         24 hours = 4,500 million years
             1 hour = 187.5 million years
                1 min = 3.125 million years
00:00         06:00        12:00        18:00           24:00
                      1 sec = 52 thousand years

        Evolution of life on Earth as a 24 hour clock
    Evolution of life on Earth
00:00        06:00         12:00    18:00           24:00




    4am – First life               8.30pm – First
    Single cell microbes           plants appear in sea
      Evolution of life on Earth
20:00          21:00            22:00   23:00   24:00




8.30pm – First– First
      8.50pm
       appear in fauna
plantsEdiacaran sea and
      jellyfish appear in sea
    Evolution of life on Earth
20:00       21:00         22:00   23:00   24:00




    9.04pm – Trilobites
    appear
    Evolution of life on Earth
20:00   21:00        22:00        23:00   24:00




            9.55pm – First land
            plants appear
    Evolution of life on Earth
20:00   21:00     22:00           23:00   24:00




                10.05pm – First land
                creatures appear
    Evolution of life on Earth
20:00   21:00         22:00           23:00       24:00




                10.24pm – land covered by trees
                – first winged insects appear
    Evolution of life on Earth
20:00   21:00   22:00      23:00          24:00




                    10.55pm – Dinosaurs
                    appear
      Evolution of life on Earth
23:00         23:15   23:30        23:45          24:00




                                   11.42pm – Primates
                      11.39pm – Dinosaurs
                                   start to appear
                      disappear – mammals
10.55pm               start to appear
Dinosaurs appear
    Evolution of life on Earth
23:56   23:57   23:58        23:59          24:00




                     23:59:18
                        23:59:57
                 23:58:43
                       Homo habilis species
                           Homo appears
                 Hominids speciesSapiens Sapiens
                           species appears
                       appears
    Evolution of life on Earth
00:00        06:00        12:00   18:00          24:00




   4am – First life               8.30pm – First
   Single cell microbes           plants appear in sea
    Evolution of life on Earth
00:00   06:00   12:00   18:00         24:00




                        10.05pm – First land
                               10.55pm Dinosaurs
                               appear
                        creatures appear
    Evolution of life on Earth
00:00   06:00   12:00     18:00          24:00




                        11.39pm – mammals
                         23:59:57
                        start to appear
                         Homo sapiens sapiens
                         species appears
 Evolution of life on Earth

Presentation written by
Andrew Trimble with
reference to:
“A Short History of
Everything” by Bill
Bryson