Fossils B/C

[dchen22]

Specimen A

Specimen B


1. Identify specimens A and B.
2. What are the diagonal bands in specimen A?
3. What unique property does specimen B have?
4. Specimen A is found above specimen B. What event is this evidence of?

[BennyTheJett]

Click to Show Answer

1) Specimen A looks like a sandstone. Specimen B looks like a shale.

2) I think you're looking for varve banding?

3) The shale displays fissility 

4)Marine Regression // A is younger than B.

LMAO I'm struggling on 2 and 3.

[dchen22]

Click to Show Answer

1) Specimen A looks like a sandstone. Specimen B looks like a shale.

2) I think you're looking for varve banding?

3) The shale displays fissility 

4)Marine Regression // A is younger than B.

LMAO I'm struggling on 2 and 3.

Correction (Click to Show Hidden Text)

For 2., the answer is Liesegang banding. (It is a side view.) 

Your turn!

[BennyTheJett]

Who is the dunkleosteus named after?

What is Montana's state fossil?

[ChimpLopez]

Who is the dunkleosteus named after?

What is Montana's state fossil?

Click to Show Answer

1. David Dunkle, the discoverer of the specimen
2. Maiasaura 

[BennyTheJett]

Correct.

[ChimpLopez]

1. Is Genus Mucrospirifer a good index fossil? If so, state what period it is a good index fossil for
2. What characteristics of a specimen make it a good index fossil?
3. What is the half life of The Carbon-14 isotope?
4. What geologic principle states that the same natural processes that we seen in present day have always operated in the universe?

[hmmm]

1. Is Genus Mucrospirifer a good index fossil? If so, state what period it is a good index fossil for
2. What characteristics of a specimen make it a good index fossil?
3. What is the half life of The Carbon-14 isotope?
4. What geologic principle states that the same natural processes that we seen in present day have always operated in the universe?

1.yes, devonian
2. Short time range, easily recognized, abundant, wide geographic distribution
3.5730 yrs
4. Uniformitarianism

[ChimpLopez]

1. Is Genus Mucrospirifer a good index fossil? If so, state what period it is a good index fossil for
2. What characteristics of a specimen make it a good index fossil?
3. What is the half life of The Carbon-14 isotope?
4. What geologic principle states that the same natural processes that we seen in present day have always operated in the universe?

1.yes, devonian
2. Short time range, easily recognized, abundant, wide geographic distribution
3.5730 yrs
4. Uniformitarianism

Correct! Your turn!

[sciolyrules107]

Alrighty. I might as well start this up again.

https://earthphysicsteaching.homestead. ... _FL_3A.JPG

1. ID
2. What is it made of?
3. What is its composition?
4. How did it form?
5. What popular cereal bar does it look like?