common fossils that help scientists learn about newer fossils
marker fossils
An extinct sea animal that had three body parts
trilobite
What animals lived 4.6 bllions to 545 million years ago?
Simple life-forms
layers of rock containing fossils that help tell the story of life on earth
fossil record
Proterozoic Era – the oldest and longest era on earth that has organisms that could not _____
see or hear
True or False: The first era of Earth didn't have oxygen.
True
Paleozoic Era – primitive dinosaurs and organisms that begin to _______
eat each other
Bonus: Give me the name of your favorite dinosaur or any animal from ancient times.
"Awesome!"
What animals lived 250 to 65 million years ago?
Dinosaurs and birds
True or False: Humans and dinosaurs lived during the same time.
false
True or False: The fish appeared on Earth after mammals did
False
True or False: Reptiles are older than bird fossils
True
the hardened remains or traces of an animal or a plant from long ago
Fossil
soil or sand that settles to the bottom of a river, lake or ocean
sediment
things found in nature that are not animals or plant
minerals
a soft, thick, sticky substance that flows from the trees
resin
