When the sacrificial Engineer broke his DNA down to seed the earth about 3.8 billion years ago I have a hard time believing that dinosaurs, trilobites, etc would come first. I have to wonder about their own evolution. Hypothetically, did they have a earth like evolution the same as we did on their home world? The last engineer had gill slits in his neck. In Human fetal developement, we have fish like gills in early stages in the womb. It sure raises great speculation.
Basic timeline
The basic timeline of a 4.6 billion year old Earth, with approximate dates:
- 3.8 billion years of simple cells (prokaryotes),
- 3.4 billion years of stromatolites demonstrating photosynthesis,
- 2 billion years of complex cells (eukaryotes),
- 1 billion years of multicellular life,
- 600 million years of simple animals,
- 570 million years of arthropods (ancestors of insects, arachnids and crustaceans),
- 550 million years of complex animals,
- 500 million years of fish and proto-amphibians,
- 475 million years of land plants,
- 400 million years of insects and seeds,
- 360 million years of amphibians,
- 300 million years of reptiles,
- 200 million years of mammals,
- 150 million years of birds,
- 130 million years of flowers,
- 65 million years since the dinosaurs died out,
- 2.5 million years since the appearance of the genus Homo,
- 200,000 years of anatomically modern humans,
- 25,000 years since the disappearance of Neanderthal traits from the fossil record.
- 13,000 years since the disappearance of Homo floresiensis from the fossil record.
