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Rocky Stoner

Crinoid ? or Coral ?

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Rocky Stoner

Hello friends,

 I found another calyx ....or coral.

This one was deep in a split and was not exposed like the others. I lightly brushed the residue away. I left it like this for the pic to maybe aid with ID.

I think it would look much like the others if it were cleaned up.

If any other views, or exposure would help, just let me know.

Its 1.5 inches diameter.

Thanks !

IMG_9983.JPG

IMG_9979.JPG

IMG_9980.JPG

IMG_9982.JPG

IMG_9981.JPG

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WhodamanHD

I'm sticking with crinoid calyx, see the little circle, that's the connection to the stem.

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Pumpkinhead

Looks like a calyx

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Herb

the plates appear to be 6-sided, I vote for coral

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Foozil

Squashed cystoid? Just a guess.

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TqB

Crinoid (echinoderm anyway), it's clearly made of plates so definitely not coral.

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Rockwood

It was made of plates. We are looking at an empty mold now. I think the odds favor crinoid quite strongly.

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dalmayshun

beautiful regardless of what it is....the complexity of nature growing in such regular patterns, amazes me...physics at work. 

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abyssunder

I'm going with crinoid calyx with the plates eroded away, on this one. All the plates are hexagons including the basal one which usually is pentagonal, but there are exceptions, like in the example below.

 

ft201605b-16.jpg.65c45a227a87f4377e8934e0dd5c5f50.jpg

picture from here

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crinus

Crinoid definitely.   The clean break is along the plate lines.  Coral would probably not break like that and would go much deeper than that.  No doubt - crinoid

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fifbrindacier

I think it's  Arthroacantha sp. like in your other post.

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crinus

Did a bit of research.  I have come to the conclusion that you have some type of Megistocrinus.  Very common in the Devonain. Plate structure is right for a Megistocrinus.

Joe

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