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MISSISSAUGA, , CANADA

Ancestor's Trail

Originally this hike was conceived as a walk back in time (as described in the book and inspired by the UK event) from the current time of Humanity going back to the common ancestor's with various other life forms to the origin of multicellular progenitors of animal life around a billion years ago and beyond to the beginning of life on earth some 3.5 billion years ago. 

However we now start at Erindale Park with the dawn of multicellular life and head up the Culham Trail in Mississauga to the current time of prolific Humanity in the park at the end of PineCliff Drive, mostly hiking along the Credit River.

The entire hike at a gingerly pace of approximately 3-4 km per hour will take about 3-4 hours.  It may take longer with stops along the way to learn about the various key evolutionary splits and events like the five major extinctions and our common ancestry with existing species.  There will be rest & refreshments stops and check-points where participants can get their passports stamped while discussing specific issues on evolution and species in distress.  

Along the way, the 'metazoan algae' who start at Erindale Park will give rise to other life forms as they develop along their unique evolutionary pathways to occupy all the available niches we find them in today.  However, with this audio tour, you may start at either end or even in the middle as the stops will prompt you with the time (in millions of years ago) that we had a common ancestor with the living survivors we know of today.

The main website is at https://www.ancestorstrail.ca/

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1695 Dundas St W, , Mississauga, , ON , Canada
Ancestor's Trail
  1. Ancestor's Trail Hike
  2. Metazoans
  3. 900MYA we had a common ancestry with Choanoflagellates (non-animal eucaryotes)
  4. 800mya we had a common ancestry with Sponges
  5. 780mya we had a common ancestry with Placozoans
  6. 730mya Ctenophores
  7. 680mya Cnidarians
  8. 630mya Flatworms
  9. 590mya Protosomes
  10. 570mya Ambulacrarians
  11. 565mya Tunicates
  12. 560mya Cephalocordates
  13. 530mya Agnatha
  14. 460mya Chondrichthyes
  15. 440-450mya FIRST GREAT EXTINCTION
  16. 440mya Actinopterygii
  17. 417mya Dipnoi
  18. 360-375mya SECOND GREAT EXTINCTION
  19. 340mya Amphibians
  20. 310mya Sauropsids (lizard-faced non-mammalian chordates)
  21. 251mya THIRD GREAT EXTINCTION
  22. 205mya FOURTH GREAT EXTINCTION
  23. 180mya Monotremes
  24. 140mya Marsupials
  25. 105mya Afrotheres
  26. 95mya Xenarthrans
  27. 85mya Laurasiatheres
  28. 75mya Glires (Rodents and Lagomorphs)
  29. 70mya Non-primate Eurachonta (Cologus and Tree shrews)
  30. 65mya FIFTH GREAT EXTINCTION
  31. 63mya Prosimians
  32. 58mya Tarsiers
  33. 40mya Platyrrhini
  34. 25mya Catarrhini
  35. 18mya Lesser Apes
  36. 14mya Orangutans
  37. 7mya Gorillas
  38. 6mya Chimpanzees and Bonobos
  39. Human Evolution on the Ancestor's Trail
  40. 7 BILLION HUMANS