1. It is where all traces of history of earth is recorded in rocks that make up the crust. 2. It is a way on how the age of rocks and fossils can be determined by its numeric value. 3. It is the largest division in the geologic time scale. 4. It refers to the rocks that are deposited and used in dating method. 5. It is used to determine the geological events in rock strata. 6. It refers to prominent reptiles that evolved during Mesozoic Era. 7. The fitting of supercontinent Pangea happened in this era. 8. The present human evolved during this age. 9. It refers to the age of the fishes. 10. Ancient bacteria and blue green algae existed during this age.

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Primate evolution

Primates are a relatively new species and first appeared in the fossil record nearly 55 million years ago. They may have originated as far back as the cretaceous period. Their fossils were observed in North America, Asia, and Europe. Long before the first monkeys and their prosimian relatives developed, most animal species thrived and died. The first primates did not exist until about 50-55 million years ago, even though the planet is 4.54 billion years old and the first life goes back at least 3.5 billion years. Dinosaurs had been extinct for 10 to 15 million years when this happened.