Cast and Impression

What type of fossil is an imprint in a rock?

• cast 

• trace 

• mold

• whole/part 

Shells and skeletons are typically fossilized in this fashion.

• mold and cast

• trace

• carbonized or carbon film

• permineralized or petrified

Tags

NGSS.MS-ESS2-3

NGSS.MS-LS4-1

What is a cast fossil?

• Any part of the actual animal or plant.

• Fossilized imprint of an organism's tracks

• Fossilized impression of the actual organism

• Forms when the mold fills in

• Hardened tree/ plant sap

What type of fossil is this?

• body

• trace

• mold

• cast

• resin

Tags

NGSS.MS-LS4-1

Fossilized rock in the shape of dinosaur bones are which type of fossil?

• real bone

• mold fossil

• cast fossil

• trace fossil

What type of fossil is this?

• body

• trace

• mold

• cast

• resin

Tags

NGSS.MS-LS4-1

What is a fossil mold?

• Yesterdays food

• Nonrenewable resources

• An impression of an ancient organism.

• Renewable resources

Tags

NGSS.MS-LS4-1

A fossil that is formed by sediments filling up a mold is a(n)

• Cast fossil

• Mold fossil

• Trace fossil

• Amber

What is a cast fossil?

• Any part of the actual animal or plant.

• Fossilized imprint of an organism's tracks

• Fossilized impression of the actual organism

• Forms when the mold fills in

Fossilized rock in the shape of dinosaur bones are which type of fossil?

• real bone

• mold fossil

• cast fossil

• trace fossil