What is the time that dinosaurs and mammals appear in the fossil record?Multiple choice question.120 MYA150 MYA220 MYA320 MYA

The first fossils date to aboutGroup of answer choices4.7 bya3.7 bya1.7 bya4.7 mya3.7 mya

Match the era on the left with its characteristic on the right.PrecambrianCenozoicPaleozoicMesozoic?When Earth formed?The age of dinosaurs?When most of our limestone and coal formed?The era of humans

What kind of fossil dating places fossils into a sequence from oldest to most recent but doesn't assign a specific age to the fossils?Multiple choice question.half-life datingradiometric datingradioactive datingrelative dating

The age of a fossil can be determined usingGroup of answer choicesradiometric datingNonespeedometricpediometric

Approximately how far back do the oldest fossils that we KNOW are actual fossils date to?Group of answer choicesA half billion years after the Archaean eonA half billion years before the Hadean eonA half billion years into the Hadean eonA half billion years after the Hadean eon