Fossils B/C

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Re: Fossils B/C

Post by hmmm » March 18th, 2019, 6:51 pm

What's the difference between coelocanthiformes and actinopterygii in ID?
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Re: Fossils B/C

Post by wec01 » March 18th, 2019, 7:04 pm

hmmm wrote:What's the difference between coelocanthiformes and actinopterygii in ID?
One big difference is the fins; coelocanths are lobe-finned and actinopterygii are ray-finned
This can be pretty clearly seen in the tails where coelocanths are more fleshy? I guess you could say? (not sure how you would describe it) and actinopterygii has long rays and the tail is often split.
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Re: Fossils B/C

Post by Bread » March 18th, 2019, 7:20 pm

wec01 wrote:
hmmm wrote:What's the difference between coelocanthiformes and actinopterygii in ID?
One big difference is the fins; coelocanths are lobe-finned and actinopterygii are ray-finned
This can be pretty clearly seen in the tails where coelocanths are more fleshy? I guess you could say? (not sure how you would describe it) and actinopterygii has long rays and the tail is often split.
Yeah that's how I usually identify sarcopterygii and actinopterygii. The tail in sarcopterygii (and coelacanthiformes) is typically more convex while the tail in sarcopterygii is typically concave.
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Re: Fossils B/C

Post by jaspattack » March 20th, 2019, 11:10 am

Where do you guys usually find info on the plant genera on the list? I'm having difficulty finding more specific information on extant ones, such as when they first appeared or things like that.
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Re: Fossils B/C

Post by jennarholt » March 20th, 2019, 1:11 pm

jaspattack wrote:Where do you guys usually find info on the plant genera on the list? I'm having difficulty finding more specific information on extant ones, such as when they first appeared or things like that.
I found mine but just searching a lot and wikipedia, although I can't guarantee that gives you everything (my last page literally just says it's a fern it has fronds)
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Re: Fossils B/C

Post by wec01 » March 20th, 2019, 4:36 pm

jennarholt wrote:
jaspattack wrote:Where do you guys usually find info on the plant genera on the list? I'm having difficulty finding more specific information on extant ones, such as when they first appeared or things like that.
I found mine but just searching a lot and wikipedia, although I can't guarantee that gives you everything (my last page literally just says it's a fern it has fronds)
Yeah, honestly once you have basic information like angiosperm or gymnosperm, seeds or spores, etc., and you can ID them, you'll probably get most of the questions on plants. The main one you should look into more thoroughly is probably Lepidodendron, but the others also have a few aspects that are often tested on. As for timeline information, fossilworks seems to be helpful: http://fossilworks.org/bridge.pl?a=taxo ... n_no=81701
here is the page on Acer, for example, and you can search for the others.
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Re: Fossils B/C

Post by jaspattack » March 22nd, 2019, 6:41 am

Thank you guys! My regional test questions about plants were pretty easy, but I wanted to make sure I was prepared as possible for state (-:
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Re: Fossils B/C

Post by DragonTownEpic » March 28th, 2019, 5:11 pm

wec01 wrote:
jennarholt wrote:
jaspattack wrote:Where do you guys usually find info on the plant genera on the list? I'm having difficulty finding more specific information on extant ones, such as when they first appeared or things like that.
I found mine but just searching a lot and wikipedia, although I can't guarantee that gives you everything (my last page literally just says it's a fern it has fronds)
Yeah, honestly once you have basic information like angiosperm or gymnosperm, seeds or spores, etc., and you can ID them, you'll probably get most of the questions on plants. The main one you should look into more thoroughly is probably Lepidodendron, but the others also have a few aspects that are often tested on. As for timeline information, fossilworks seems to be helpful: http://fossilworks.org/bridge.pl?a=taxo ... n_no=81701
here is the page on Acer, for example, and you can search for the others.
Glossopteris too! I see it tested very frequently.
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Re: Fossils B/C

Post by UTF-8 U+6211 U+662F » March 29th, 2019, 12:05 pm

DragonTownEpic wrote:
wec01 wrote:
jennarholt wrote: I found mine but just searching a lot and wikipedia, although I can't guarantee that gives you everything (my last page literally just says it's a fern it has fronds)
Yeah, honestly once you have basic information like angiosperm or gymnosperm, seeds or spores, etc., and you can ID them, you'll probably get most of the questions on plants. The main one you should look into more thoroughly is probably Lepidodendron, but the others also have a few aspects that are often tested on. As for timeline information, fossilworks seems to be helpful: http://fossilworks.org/bridge.pl?a=taxo ... n_no=81701
here is the page on Acer, for example, and you can search for the others.
Glossopteris too! I see it tested very frequently.
Glossopteris is importantly mainly because it helped with the theory of plate tectonics

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Re: Fossils B/C

Post by Unome » March 29th, 2019, 12:10 pm

UTF-8 U+6211 U+662F wrote:
DragonTownEpic wrote:
wec01 wrote: Yeah, honestly once you have basic information like angiosperm or gymnosperm, seeds or spores, etc., and you can ID them, you'll probably get most of the questions on plants. The main one you should look into more thoroughly is probably Lepidodendron, but the others also have a few aspects that are often tested on. As for timeline information, fossilworks seems to be helpful: http://fossilworks.org/bridge.pl?a=taxo ... n_no=81701
here is the page on Acer, for example, and you can search for the others.
Glossopteris too! I see it tested very frequently.
Glossopteris is importantly mainly because it helped with the theory of plate tectonics
Concur, fossils that have particular importance or interesting characteristics tend to come up more often. It's much easier to write questions about, say, Plateosaurus than about Astraeospongia.
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