3.3 Index Fossils
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Last updated about 5 years ago
12 questions
10
You find a different rock with some kind of trilobite and an ammonoid. During
which period could this rock have formed? Explain.
You find a different rock with some kind of trilobite and an ammonoid. During
which period could this rock have formed? Explain.
10
Identify the coral index fossil that would most likely be found in the same
layer as the index fossil Ctenocrinus.
Identify the coral index fossil that would most likely be found in the same
layer as the index fossil Ctenocrinus.
10
Each index fossil existed for a relatively short geologic time interval. State
one other characteristic that each fossil must have to be considered an index
fossil.
Each index fossil existed for a relatively short geologic time interval. State
one other characteristic that each fossil must have to be considered an index
fossil.
10
Look at the image above. Both organisms that formed the fossils found in rock
layers 3 and 4
Look at the image above. Both organisms that formed the fossils found in rock
layers 3 and 4
10
Look at the image above. Evidence best indicates that rock layers 4 and 8 were
deposited during the same geologic period because both layers
Look at the image above. Evidence best indicates that rock layers 4 and 8 were
deposited during the same geologic period because both layers
10
Look at the image above. Three rock layers formed during the Silurian Period.
Which fossil might be found in these rock layers?
Look at the image above. Three rock layers formed during the Silurian Period.
Which fossil might be found in these rock layers?
10
Fossils of trilobites, graptolites, and eurypterids are found in the same
bedrock layer in New York State. During which geologic time interval could this
bedrock layer have formed?
Fossils of trilobites, graptolites, and eurypterids are found in the same
bedrock layer in New York State. During which geologic time interval could this
bedrock layer have formed?
10
Which statement can best be supported by the fossil record?
Which statement can best be supported by the fossil record?
10
According to the fossil evidence which sequence shows the order in which these
four life-forms first appeared on Earth? (Use “Life on Earth” column)
According to the fossil evidence which sequence shows the order in which these
four life-forms first appeared on Earth? (Use “Life on Earth” column)
10
Fossils of Brachiopods, Trilobites, and Placoderm fish are found in the same
bedrock layer in New York State. Name one period in which this bedrock layer
could have formed.
Fossils of Brachiopods, Trilobites, and Placoderm fish are found in the same
bedrock layer in New York State. Name one period in which this bedrock layer
could have formed.
10
You find the fossil (right) in the bedrock of New York State. In what type of
rock was it likely found?
You find the fossil (right) in the bedrock of New York State. In what type of
rock was it likely found?
10
How did this rock form? (Use The Rock Cycle if you can’t remember!)
How did this rock form? (Use The Rock Cycle if you can’t remember!)