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pleecan

Cyclocystoid Or Crinoid Stem Section? Late Ordovician.

8 posts in this topic

[attachment=158802:DSC04865asmall.JPG]

Found this today.... what is it....
Is this a cyclocytoid or just a crinoid stem section???
PL

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Crinoid. The Cycloctstoid rings are made up of individual pieces.

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[quote name='erose' timestamp='1345935938' post='346770']
Crinoid. The Cycloctstoid rings are made up of individual pieces.
[/quote]

Thanks erose!

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Wished I could have joined you today but could not fit it in, in retrospect though I suspect it was a hot one at the quarry.

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[quote name='Malcolmt' timestamp='1345941082' post='346794']
Wished I could have joined you today but could not fit it in, in retrospect though I suspect it was a hot one at the quarry.
[/quote]
Hey Malcolm: I was the only crazy person in the quarry.... air temp was 34C outside the quarry.... the rocks in the quarry must have been 40C but there was a breeze ... hot it was but tolerable... .. found also a bunch of weather edrioasteroids... only brought one home... a partial.

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I agree that it's a crinoid columnal.

However, this mention of cyclocystoids has brought up a very interesting topic in my searching. It's interesting how there seems to be some disagreement on exactly where to place them. Fascinating!

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[quote name='Mr. Edonihce' timestamp='1345991463' post='346933']
I agree that it's a crinoid columnal.

However, this mention of cyclocystoids has brought up a very interesting topic in my searching. It's interesting how there seems to be some disagreement on exactly where to place them. Fascinating!
[/quote]

Echinoids are my favorite critters BECAUSE they are so hard to understand. Our paleo society here in Austin has the pleasure of including Prof. James Sprinkle as a member and science advisor. He specializes in echinoids and is always telling us about some new ideas or re-ordering of the taxonomy.

Finding a Cyclocystoid is on my "list".

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On my list of things to do on a rainy day is to go through under the scope boxes of hash plate material from the site Peter was at, looking for edrioasteroids and cyclocystoids, I say a cyclocystoid a member on the forum found there in person the other day and realized that it would be very easy to miss if someone did not point it out to you.

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