old rocks

bones of dinosaurs

pieces or marks of ancient life

In San Diego

all over the world

in the deserts

at museums

to keep in tact (save)

very old

a time before humans

to keep in tact (save)

very old

a time before humans

to keep in tact (save)

very old

a time before humans

they must be buried

they must rot

they must be left untouched

they must be underwater

2

3

4

5

6

dust

dirt

sediment

leaves

animal dies, gets buried in sediment, minerals seep into the hard parts

animal dies, gets buried in sediment, minerals chemically change the fur and muscles

minerals

sediment

rocks

soil

a type of ice

yellowed mud

thick tar

hardened tree sap

body fossils

bone fossils

trace fossils

rock fossils

lemon fossils

trace fossils

body fossil

Body fossil

Trace fossil

geologist

paleontologist

rock doctors

gemologist

bones

teeth

claws

bones, teeth, and claws

Mold

Cast

Body

Trace

Mold

Cast

Trace

Body

Doctors

Paleontologists

Scientists

Biologists

They take a picture

They bury them

They watch them for hours

They us a fossil record

Tell us how animals have changed

Tell us what Earth's climate (weather) was like in the past

Tell us how long Earth has existed

Tell us about the Earth's landscape in the past

How plants or animals originated (started)

True

False