Fossils B/C

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BennyTheJett
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Re: Fossils B/C

Postby BennyTheJett » February 21st, 2019, 6:16 pm

AWildMudkip wrote:
AwersomeUser wrote:And also, for certain fossils there are not many website showing up on google search that are helpful so does it usually mean it is a less well studied fossil so I can almost assume that it is not going to be on the test and therefore I don't have to concentrate as much on those?


For fossils that seemingly don't have a lot of info, use scholar.google.com. For test writing I've found a whole bunch of nice stuff to write about in scholarly articles.


Another great resource (for basically every event tho) is textbooks. I photocopy certain parts of a textbook for fossil and other events. I would focus more on Identification if the event is in a week, so you can at least be confident in picking up easy ID points.
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Re: Fossils B/C

Postby StuffyNose45 » February 24th, 2019, 8:26 am

Can someone please explain the difference between Replacement, Permineralization, Petrifaction, and Recrystallization? A few proctors use it interchangeably and others have different definitions than our team. I guess I'm asking for what definitions are agreed upon and useable at higher level competitions.

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Re: Fossils B/C

Postby UTF-8 U+6211 U+662F » February 24th, 2019, 9:05 am

StuffyNose45 wrote:Can someone please explain the difference between Replacement, Permineralization, Petrifaction, and Recrystallization? A few proctors use it interchangeably and others have different definitions than our team. I guess I'm asking for what definitions are agreed upon and useable at higher level competitions.

I've been relying on this: http://www.fossilmuseum.net/fossilrecor ... zation.htm
https://sciencing.com/types-fossil-pres ... 13212.html

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Re: Fossils B/C

Postby AwersomeUser » February 24th, 2019, 9:25 am

BennyTheJett wrote:
AWildMudkip wrote:
AwersomeUser wrote:And also, for certain fossils there are not many website showing up on google search that are helpful so does it usually mean it is a less well studied fossil so I can almost assume that it is not going to be on the test and therefore I don't have to concentrate as much on those?


For fossils that seemingly don't have a lot of info, use scholar.google.com. For test writing I've found a whole bunch of nice stuff to write about in scholarly articles.


Another great resource (for basically every event tho) is textbooks. I photocopy certain parts of a textbook for fossil and other events. I would focus more on Identification if the event is in a week, so you can at least be confident in picking up easy ID points.


Ok thanks! But Wikipedia is generally reliable, right?

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Re: Fossils B/C

Postby AwersomeUser » February 24th, 2019, 9:28 am

Also, do they test the same stuff in division C? (But they make the test harder?)

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Re: Fossils B/C

Postby UTF-8 U+6211 U+662F » February 24th, 2019, 9:50 am

AwersomeUser wrote:
BennyTheJett wrote:
AWildMudkip wrote:
For fossils that seemingly don't have a lot of info, use scholar.google.com. For test writing I've found a whole bunch of nice stuff to write about in scholarly articles.


Another great resource (for basically every event tho) is textbooks. I photocopy certain parts of a textbook for fossil and other events. I would focus more on Identification if the event is in a week, so you can at least be confident in picking up easy ID points.


Ok thanks! But Wikipedia is generally reliable, right?

Yes

AwersomeUser wrote:Also, do they test the same stuff in division C? (But they make the test harder?)

From what I've seen, the tests are generally the same, although different test writers will do different things depending on how they judge the capabilities of middle vs high schoolers.

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Re: Fossils B/C

Postby Kyanite » February 24th, 2019, 5:46 pm

AwersomeUser wrote:Also, do they test the same stuff in division C? (But they make the test harder?)


They test the same stuff for the most part, I know for my C tests I make them harder by adding more anatomy, vocabulary words and just sheer number of questions.

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Re: Fossils B/C

Postby fzhan » March 1st, 2019, 1:20 am

How do you tell dinosaur teeth apart? I'm having a surprisingly hard time with just dinosaur teeth, particularly the carnivorous dinosaurs.

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Re: Fossils B/C

Postby BennyTheJett » March 1st, 2019, 3:15 am

fzhan wrote:How do you tell dinosaur teeth apart? I'm having a surprisingly hard time with just dinosaur teeth, particularly the carnivorous dinosaurs.

I haven't had to identify teeth all year. Do you have pictures of each tooth that you can match? I'd first determine if they are carnivorous or herbivorous and go from there (I also am not great at fossils, so I'm not really the one to ask).
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Re: Fossils B/C

Postby UTF-8 U+6211 U+662F » March 1st, 2019, 6:49 am

BennyTheJett wrote:
fzhan wrote:How do you tell dinosaur teeth apart? I'm having a surprisingly hard time with just dinosaur teeth, particularly the carnivorous dinosaurs.

I haven't had to identify teeth all year. Do you have pictures of each tooth that you can match? I'd first determine if they are carnivorous or herbivorous and go from there (I also am not great at fossils, so I'm not really the one to ask).

You just have to stare at them a lot and memorize them: I think they all have distinctive features.

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Re: Fossils B/C

Postby dxu46 » March 1st, 2019, 7:31 am

UTF-8 U+6211 U+662F wrote:
BennyTheJett wrote:
fzhan wrote:How do you tell dinosaur teeth apart? I'm having a surprisingly hard time with just dinosaur teeth, particularly the carnivorous dinosaurs.

I haven't had to identify teeth all year. Do you have pictures of each tooth that you can match? I'd first determine if they are carnivorous or herbivorous and go from there (I also am not great at fossils, so I'm not really the one to ask).

You just have to stare at them a lot and memorize them: I think they all have distinctive features.

Isn't that every ID event though

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Re: Fossils B/C

Postby UTF-8 U+6211 U+662F » March 1st, 2019, 7:48 am

dxu46 wrote:
UTF-8 U+6211 U+662F wrote:
BennyTheJett wrote:I haven't had to identify teeth all year. Do you have pictures of each tooth that you can match? I'd first determine if they are carnivorous or herbivorous and go from there (I also am not great at fossils, so I'm not really the one to ask).

You just have to stare at them a lot and memorize them: I think they all have distinctive features.

Isn't that every ID event though

Yes

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Re: Fossils B/C

Postby dchen22 » March 2nd, 2019, 7:32 am

Does anyone happen to know if Cryptolithus and Phacops/Eldredgeops were natant, conterminent, or impendent (or none of the above)?

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Re: Fossils B/C

Postby Unome » March 2nd, 2019, 8:46 am

dchen22 wrote:Does anyone happen to know if Cryptolithus and Phacops/Eldredgeops were natant, conterminent, or impendent (or none of the above)?

I would recommend looking at some images.
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Re: Fossils B/C

Postby wec01 » March 2nd, 2019, 3:11 pm

Unome wrote:
dchen22 wrote:Does anyone happen to know if Cryptolithus and Phacops/Eldredgeops were natant, conterminent, or impendent (or none of the above)?

I would recommend looking at some images.


I don't know for sure, but I would assume Cryptolithus was natant and Eldredgeops was conterminent. Generally conterminent hypostomes are associated with a predatory lifestyle, and Eldredgeops is thought to be predatory while Cryptolithus is not. I would still look it up though (I probably will too).
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