Fossils B/C

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Re: Fossils B/C

Post by Cheesy Pie » May 16th, 2011, 1:12 pm

Well, except for the coast of lake michigan...
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Re: Fossils B/C

Post by germinator » May 17th, 2011, 5:44 pm

yea, i was going to say that
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Re: Fossils B/C

Post by paleonaps » May 17th, 2011, 5:45 pm

HELP what was the geologic time range of Cypraea?!?!
And why did the different suture patterns emerge?!?!
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Re: Fossils B/C

Post by germinator » May 17th, 2011, 5:48 pm

Jurassic - recent
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Re: Fossils B/C

Post by Cheesy Pie » May 17th, 2011, 5:48 pm

A guy in my class says "proterozoic era." I know fail. It's proterozoic EON.
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Re: Fossils B/C

Post by quizbowl » May 17th, 2011, 7:09 pm

paleonaps wrote:HELP what was the geologic time range of Cypraea?!?!
And why did the different suture patterns emerge?!?!
One explanation for this increasing extravagancy in suture pattern is that it leads to a higher strength of the shell, but also just competition over time led to one surviving over the other, and those with similar patterns survived (gogo ecology).
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Re: Fossils B/C

Post by germinator » May 17th, 2011, 8:16 pm

cowries have sutures? do you mean like the stuff on the top?
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Re: Fossils B/C

Post by quizbowl » May 18th, 2011, 7:59 am

I'm referring to the Ammonites. Cypraea do not have disginguishable suture lines.
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Re: Fossils B/C

Post by Cheesy Pie » May 19th, 2011, 3:54 pm

What are sutures exactly? Yeah I'm stupid.
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Re: Fossils B/C

Post by Kokonilly » May 22nd, 2011, 6:07 pm

What did everyone think of the nationals test? I thought the samples were pretty fantastic, but what was that massive bone? We guessed that it was a tibia... we didn't really know.

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