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What is this?


jnicholes

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Hey everyone,

 

I had to make a trip up to Spokane, Washington, to help my grandparents move. They’re moving in with us.

 

While I was helping pack boxes, I found this rock in their garage. Obviously has fossils in it.

 

My grandfather was kind enough to give it to me.

 

Any idea what this is? Is it even a fossil? I am attaching pictures.

 

 

E167F95C-CADC-4D48-A880-E1E51CE2BC63.jpeg

CE24ADC9-64BE-4FC9-9FDB-B0C3BEDFCD39.jpeg

72C82C43-843A-4AE1-92B0-F26217E7FF59.jpeg

38CD1787-1ED6-427D-A3AF-12EC9A330C37.jpeg

6F7E159F-BE9E-493D-889F-F84F8700003F.jpeg

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Those are casts of crinoid stems.  The stems are gone - dissolved - but they've left their casts in the limestone matrix.

  • I Agree 2

http://pristis.wix.com/the-demijohn-page

 

What seest thou else

In the dark backward and abysm of time?

---Shakespeare, The Tempest

 

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Thank you. I suspected that it was a crinoid. One of them does not look like a cast, though.

 

I’m referring to the second photo from the top.

 

Thanks for helping me out.

 

Jared

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2 minutes ago, jnicholes said:

Thank you. I suspected that it was a crinoid. One of them does not look like a cast, though.

 

I’m referring to the second photo from the top.

 

Thanks for helping me out.

 

Jared

I agree it is a crinoid. The second from top is a cast of the internal canal. As an analogy, your crinoid would be like a series of stacked donuts, a series of hollow rings. What you're seeing is the stacked donut holes. 

  • I found this Informative 1
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Just now, Crusty_Crab said:

I agree it is a crinoid. The second from top is a cast of the internal canal. As an analogy, your crinoid would be like a series of stacked donuts, a series of hollow rings. What you're seeing is the stacked donut holes. 


thanks for the clarification. I appreciate it.

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Google Crinoid lumen cast.

    Tim    -  VETERAN SHALE SPLITTER

   MOTM.png.61350469b02f439fd4d5d77c2c69da85.png      PaleoPartner.png.30c01982e09b0cc0b7d9d6a7a21f56c6.png.a600039856933851eeea617ca3f2d15f.png     Postmaster1.jpg.900efa599049929531fa81981f028e24.jpg    VFOTM.png.f1b09c78bf88298b009b0da14ef44cf0.png  VFOTM  --- APRIL - 2015  

__________________________________________________
"In every walk with nature one receives far more than he seeks."

John Muir ~ ~ ~ ~   ><))))( *>  About Me      

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9 minutes ago, Fossildude19 said:

Google Crinoid lumen cast.


thank you. I just did. It’s pretty interesting.

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Kind of bad, kind of good news.

 

The rock itself broke. However, it exposed more crinoid casts. One of which I was able to extract.

 

it’s going in a labeled frame eventually.

 

Jared

C3EC6668-17C0-4FF9-BCE1-7CD3A2B32983.jpeg

BF5B192A-D29D-49E9-9FB0-C767E4DBE83D.jpeg

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