Fossils B/C

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Fossils B/C

Postby hippo9 » September 3rd, 2018, 7:17 pm

Ok I'm gonna start the fossils question marathon I guess.
image
Image

1. What fossil is this?
2. What is it's temporal range?
Last edited by hippo9 on September 3rd, 2018, 7:22 pm, edited 1 time in total.
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Re: Fossils B/C

Postby UTF-8 U+6211 U+662F » September 3rd, 2018, 7:18 pm

hippo9 wrote:Ok I'm gonna start the fossils question marathon I guess.
img
Image

1. What fossil is this?
2. What is it's temporal range?

This question smells reused
Answer
1. Eurypterida 2. 467-252 mya

P.S. Going forwards, can we hide images?

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Re: Fossils B/C

Postby pikachu4919 » September 3rd, 2018, 7:20 pm

UTF-8 U+6211 U+662F wrote:
hippo9 wrote:Ok I'm gonna start the fossils question marathon I guess.
img
Image

1. What fossil is this?
2. What is it's temporal range?

This question smells reused
Answer
1. Eurypterida 2. 467-252 mya

P.S. Going forwards, can we hide images?


Yes, you can. Just include it in the hide range and it should do it.
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Re: Fossils B/C

Postby hippo9 » September 3rd, 2018, 7:23 pm

Yes both are correct, and if it's been used before sorry, I didn't know.

Anyways some one else can continue!
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Re: Fossils B/C

Postby UTF-8 U+6211 U+662F » September 3rd, 2018, 7:30 pm

Describe a few methods of fossilization, e.g. petrifaction.

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Re: Fossils B/C

Postby hippo9 » September 4th, 2018, 10:13 am

Here's a few:

Answers
Petrification: Over time minerals seep into, and replace organic matter until a hard rock like fossil is left over
Trace: trace fossils are left in rock as impressions such as tracks or burrows
Preservation: preservation occurs when an organism is engulfed in an oxygen free environment such as ice or amber and results in the most intact fossils.
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Re: Fossils B/C

Postby UTF-8 U+6211 U+662F » September 4th, 2018, 1:27 pm

hippo9 wrote:Here's a few:

Answers
Petrification: Over time minerals seep into, and replace organic matter until a hard rock like fossil is left over
Trace: trace fossils are left in rock as impressions such as tracks or burrows
Preservation: preservation occurs when an organism is engulfed in an oxygen free environment such as ice or amber and results in the most intact fossils.

Yep! (Although there's quite a few more that I can think of. I'll post them when I get a chance.)

Edit:
Some more are
Permineralization (which includes silicification and pyritization), replacement, casts, molds, other trace fossils (also called ichnofossils) such as coprolites, and actual remains preserved by desiccation, polymerization in amber, and tar pits.

I'll be glad if anyone can think of any more!

hippo9 wrote:Yes both are correct, and if it's been used before sorry, I didn't know.

Anyways some one else can continue!

By that I was just referencing this post.

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Re: Fossils B/C

Postby hippo9 » September 5th, 2018, 9:50 am

UTF-8 U+6211 U+662F wrote:By that I was just referencing this post.

Ohh yeah completely forgot about that general chat thread.

Anyways,
Image
Image

1. List the following strata in order from oldest to youngest.
2. How can relative dating be used to help date fossils?
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Re: Fossils B/C

Postby UTF-8 U+6211 U+662F » September 5th, 2018, 12:57 pm

hippo9 wrote:
Image
Image

1. List the following strata in order from oldest to youngest.
2. How can relative dating be used to help date fossils?

Answer
1. C, B, A, D, E (And then erosion of A and formation of the dirt layer? Not too sure how A became flat on the top and how D became exposed on the surface. Should probably know this stuff if I'm doing GeoMapping.)
2. Relative dating can be used to determine if two fossils are of around the same age, or if one is older and which. This can be especially helpful in conjunction with the use of index fossils and radioactive dating methods.

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Re: Fossils B/C

Postby pb5754[] » September 5th, 2018, 1:10 pm

hippo9 wrote:Anyways,
Image
Image

1. List the following strata in order from oldest to youngest.
2. How can relative dating be used to help date fossils?

Attempt
1. C, B, A, D, E
2. Relative dating allows geologists to determine the order in which fossils formed. So you can determine a range of dates during which the fossil formed? (idk about this, I haven't studied that much for Fossils yet lol)
nvm lol

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Re: Fossils B/C

Postby hippo9 » September 5th, 2018, 9:11 pm

UTF-8 U+6211 U+662F wrote:
hippo9 wrote:
Image
Image

1. List the following strata in order from oldest to youngest.
2. How can relative dating be used to help date fossils?

Answer
1. C, B, A, D, E (And then erosion of A and formation of the dirt layer? Not too sure how A became flat on the top and how D became exposed on the surface. Should probably know this stuff if I'm doing GeoMapping.)
2. Relative dating can be used to determine if two fossils are of around the same age, or if one is older and which. This can be especially helpful in conjunction with the use of index fossils and radioactive dating methods.

Yeah pretty much. And I guess D could potentially be a sill or dyke that pushed its way to the surface but I'm not quite sure either.
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Re: Fossils B/C

Postby UTF-8 U+6211 U+662F » September 6th, 2018, 12:54 pm

The ID of this fossil is in the URL, so you can check your answer for #1 before answering the others
Image


1) Identify this fossil to the most specific taxon allowed by the Fossils List.
2) What is the particular geological significance of this fossil?
3) What period was this specimen alive during?

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Re: Fossils B/C

Postby isotelus » October 15th, 2018, 3:28 pm

Answering:
1. Genus Glossopteris
2. It was best known for being found on both South America and Africa, thus proving the two continents must have been connected at some point
3. Permian
'19 Season: Fossils, ELG, Solar System
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Re: Fossils B/C

Postby UTF-8 U+6211 U+662F » October 15th, 2018, 4:03 pm

isotelus wrote:
Answering:
1. Genus Glossopteris
2. It was best known for being found on both South America and Africa, thus proving the two continents must have been connected at some point
3. Permian

Yep, your turn! (Nice username.)

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Re: Fossils B/C

Postby isotelus » October 16th, 2018, 6:05 pm

UTF-8 U+6211 U+662F wrote:
isotelus wrote:
Answering:
1. Genus Glossopteris
2. It was best known for being found on both South America and Africa, thus proving the two continents must have been connected at some point
3. Permian

Yep, your turn! (Nice username.)


Same to you!

Identify the types of preservation:
1.
Image


2.
Image


3.
Image


Answer the following:

4. Explain the method of permineralization and replacement.

5. What are ichnofossils?
'19 Season: Fossils, ELG, Solar System
'19 Nationals: Parasitology (1st) and Sci Quiz Bowl (10th)


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