Paleontology

The earliest forms of life evolved into existence

• 539 million years ago.

• 4.0 billion years ago.

• 2.5 billion years ago.

• 252 million years ago.

The earliest forms of multicellular life evolved into existence

• 539 million years ago.

• 4.0 billion years ago.

• 2.5 billion years ago.

• 252 million years ago.

The sudden increase in biodiversity of multicellular life occurred

• 539 million years ago.

• 4.0 billion years ago.

• 2.5 billion years ago.

• 252 million years ago.

What is the correct order of the periods of the Mesozoic era?

• Triassic, Jurassic, Cretaceous

• Jurassic, Triassic, Cretaceous

• Triassic, Cretaceous, Jurassic

• Jurassic, Cretaceous, Triassic

The Mesozoic era ended

• 539 million years ago.

• 252 million years ago.

• 201 million years ago.

• 66 million years ago.

The worst mass extinction occurred

• 539 million years ago.

• 252 million years ago.

• 201 million years ago.

• 66 million years ago.

The Cenozoic era is often called the era of

• dinosaurs.

• reptiles.

• mammals.

• synapsids.

The Mesozoic era is often called the era of

• dinosaurs.

• reptiles.

• mammals.

• synapsids.

True or False: Footprints leftover from prehistoric times are considered to be fossils.

• True

• False

Which of the following is NOT a requirement for fossilization to occur?

• minimal oxygen present

• minimal bacteria present

• be rapidly buried by sediment

• be made of bone