When you think about fossils, you probably picture the big-money stuff: T-Rex skeletons, perfectly preserved mammoths and the like. Compared to them, the vast majority of fossils are relatively tiny and seemingly insignificant.
A preserved piece of a plant or animal can officially be called a fossil if it's more than how many years old?
What's the fossil record?
- a list of the oldest fossilized specimens that have been found for each species
- a database of all the species that have ever existed
- all the fossils that have ever been discovered
About how far back does the fossil record go?
- 550 million years
- 1 billion years
- 3 billion years
According to the information we have from the fossil record, about how old is the Earth?
- 4.5 billion years old
- 3 billion years old
- 2.5 billion years old
What do paleontologists use mass spectrometers for?
- finding the location of a fossil encased in amber
- determining a fossil's age
- separating a fossil from the rock that surrounds it
What's a transitional fossil?
- a fossil of indeterminate age
- a fossil that doesn't look like one specific animal
- a fossil that isn't fully preserved
How old are the oldest human fossils?
- 195,000 years old
- 255,000 years old
- 305,000 years old
What's a living fossil?
- an animal that very closely resembles an ancient, fossilized animal
- an animal that can live hundreds of years
- a modern species whose ancestors have never been found in a fossilized state
In February 2009, paleontologists unearthed a 60-million-year-old snake -- the largest on record. How much would it have weighed when it was living?
- 900 pounds
- 1,400 pounds
- 2,500 pounds
Where is "Dinosaur City," the world's largest fossil site?