Unit 5 Review

Which type of rock are fossils typically found in?

• Igneousm
• Sedimentary
• Metamorphic

 These are dinosaur footprints. What is this a example of?

• All of the below!!!!!
• index fossil
• permineralized  remains
• trace fossil

What is hardened tree sap?

• coprolites
• index fossils
• gastroliths
• amber

Fossils that are not the actual organism but evidence of that organism's existance.

• index fossils
• trace fossils 
• altered hard parts
• original preservation

On the geologic time scale, eras are subdivided into which of the following?

• indexes
• periods
• ages
• eons

which of the following options describes the Cambrian Explosion?

• A great number of different organisms evolved
• a supercontinent broke apart
• a mass extinction event 
• an asteroid collided into Earth

A leaf falls into a shallow lake and is rapidly buried in the sediment that changes to rock over millions of years.  Which type of fossil would be formed?

• mold and cast
• carbon film
• trace fossil
• amber

A gap in the geologic record formed when sedimentary rocks cover an eroded surface is called a(n)____

• superpositioncast
• unconformity
• extrusion

A hollow area in sediment in the shape of all or part of an organism is the description of which type of fossil?

• mold
• trace
• cast
• carbon film

In which type of environment would a trilobite form?

• arid or desert
• tropical or humid
• oceanic or aquatic
• alpine or mountain