# In the spirit of Ken Ham's Ark Encounter, here's a resource for how old things actually are. **URL:** \ **Category:** Religion and Secularism\ **Created:** [July 11, 2016, 3:55pm UTC](https://forum.centerforinquiry.org/t/in-the-spirit-of-ken-hams-ark-encounter-heres-a-resource-for-how-old-things-actually-are/5105 "2016-07-11T15:55:21Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![ryanbays](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.centerforinquiry.org/ryanbays/32/114_2.png) [@ryanbays](https://forum.centerforinquiry.org/u/ryanbays)\ **Post date:** [July 11, 2016, 3:55pm UTC](https://forum.centerforinquiry.org/t/in-the-spirit-of-ken-hams-ark-encounter-heres-a-resource-for-how-old-things-actually-are/5105/1 "2016-07-11T15:55:21Z")
Hope you enjoy this! Age of the Universe: 13.77 Billion Years Age of the Milky Way: 13.6 Billion Years Age of the Sun: 4.57 Billion Years Age of Earth: 4.54 Billion Years RNA on Earth: 4 Billion Years Prokaryotes on Earth: 3.8 Billion Years Photosynthesis on Earth: 2.8 Billion Years Eukaryotes on Earth: 2.1 Billion Years Sexual Reproduction on Earth: 1.2 Billion Years Multicellular life on Earth: 1.5 Billion Years Cambrian explosion on Earth: 570-530 Million Years Arthropods on Earth: 570 Million Years First animal footprints on land: 530 Million Years Plants move on to land: 434 Million Years Meet Tiktaalik roseae, the transitional fossil fish with a neck: 375 Million Years Dinosaurs and mammals on the scene: 225 Million Years Tyrannosaurus Rex roars: 68 Million Years Cretaceous–Paleogene extinction event (bye bye Dinosaurs, make room for more mammals): 65.5 Million Years Earliest primate ancestor: 55 Million Years New World monkeys (long tails) and Catarrhini: 30 Million Years Catarrhini splits in to Old World monkeys and apes (Hominoidae): 25 Million Years Proconsul, one of the earliest monkey to ape transitional fossils: 21 Million Years Hominoidae splits in to Great Apes and Lesser Apes: 15 Million Years Speciation within Great Apes launches lines toward gorillas (10 Million Years), and our common ancestor with chimpanzees (7 Million Years) Strong evidence for bipedalism in Australopithecus afarensis (3.7 Million Years) First stone tools (2.6 Million Years) Homo habilis, the earliest of our ancestors to show a significant increase in brain size and also the first to be found associated with stone tools Homo erectus (aka Homo ergaster) (1.8 Million Years) Homo ergaster controls fire (1.5 Million Years) Homo heidelbergensis leaves footprints in Italy (385 Thousand Years) Homo sapiens (200 Thousand Years) Homo sapiens leave Africa (100 Thousand Years) Homo sapiens arrive in Australia (50 Thousand Years) Neanderthal extinct (40 Thousand Years) Homo sapiens become last man standing (12 Thousand Years) Agricultural society develops (10 Thousand Years) The Epic of Gilgamesh, the oldest story ever written by humans, is jotted down in Mesopotamia (4,150 Years) The age of the universe is estimated by Homo sapiens using the WMAP satellite (6 Years) Link to post with hyperlinks: [https://ryanbays.com/2015/04/30/the-ages-of-things-understanding-what-is-true/](https://ryanbays.com/2015/04/30/the-ages-of-things-understanding-what-is-true/) ---
**Author:** ![lausten](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.centerforinquiry.org/lausten/32/23705_2.png) [@lausten](https://forum.centerforinquiry.org/u/lausten)\ **Post date:** [July 11, 2016, 7:06pm UTC](https://forum.centerforinquiry.org/t/in-the-spirit-of-ken-hams-ark-encounter-heres-a-resource-for-how-old-things-actually-are/5105/2 "2016-07-11T19:06:26Z")
When was it that a human left a footprint inside a dinosaur footprint? Sometime in the 50’s? ---
**Author:** ![macgyver](https://avatars.discourse-cdn.com/v4/letter/m/ac91a4/32.png) [@macgyver](https://forum.centerforinquiry.org/u/macgyver)\ **Post date:** [July 11, 2016, 11:13pm UTC](https://forum.centerforinquiry.org/t/in-the-spirit-of-ken-hams-ark-encounter-heres-a-resource-for-how-old-things-actually-are/5105/3 "2016-07-11T23:13:42Z")
> When was it that a human left a footprint inside a dinosaur footprint? Sometime in the 50's? I don't know. I'll have to look at those old Flintstone episodes. ---
**Author:** ![darrons](https://avatars.discourse-cdn.com/v4/letter/d/58956e/32.png) [@darrons](https://forum.centerforinquiry.org/u/darrons)\ **Post date:** [July 20, 2016, 1:53pm UTC](https://forum.centerforinquiry.org/t/in-the-spirit-of-ken-hams-ark-encounter-heres-a-resource-for-how-old-things-actually-are/5105/4 "2016-07-20T13:53:32Z")
I think it was in the 1950s. Been awhile since I stopped by Glen Rose, TX, to look at the footprints. I heard they have a life-size wax figure of Tom Landry in the lobby. ---
**Author:** ![loisl](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.centerforinquiry.org/loisl/32/18_2.png) [@loisl](https://forum.centerforinquiry.org/u/loisl)\ **Post date:** [July 20, 2016, 6:11pm UTC](https://forum.centerforinquiry.org/t/in-the-spirit-of-ken-hams-ark-encounter-heres-a-resource-for-how-old-things-actually-are/5105/5 "2016-07-20T18:11:29Z")
Ryanbays forgot one. IQ of Ken Ham. 75 on a good day.