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20cm crinoid stem with radices, Carboniferous, UK


TqB

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Just reassembled, crinoid stem with a bit of character. Probably Poteriocrinus sp., or maybe Rhabdocrinus, 20cm long, 10-12mm diameter, in a high energy deposit full of crinoid, bryozoan and brachiopod débris. It's unusually well articulated for this bed which mostly contains smaller broken bits of stems, arms and plates.

 

There's a probably pathological swelling towards the top, above the radices.

 

Last photo shows it as collected - very fragile and the main stem had largely broken into calcite cleavage fragments.

Prepping so far was just a matter of letting it dry, then gluing, poking off shale with a needle and scrubbing (wet again) with a toothbrush.

I'm letting it dry thoroughly and will then consolidate the sides and base of the block with thin paraloid solution. I might then air abrade a bit. 

 

Brigantian, Co. Durham, UK.

 

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Tarquin

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That's a really nice specimen! Looking forward to seeing the final prepping result :)

-Christian

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Opalised fossils are the best: a wonderful mix between paleontology and mineralogy!

 

Q. Where do dinosaurs study?

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Wow! :drool: 

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    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  

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

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Really nice! :)

The lumen infill of the stem is nicely visible in the last picture.

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Great specimen... You've done a nice job of it so far - If it were mine I'd probably be quite happy with it as is, but if you can make it even better, the go for it!

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very cool specimen

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"Absence of evidence is not evidence of absence"_ Carl Sagen

No trees were killed in this posting......however, many innocent electrons were diverted from where they originally intended to go.

" I think, therefore I collect fossils." _ Me

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Thanks, everyone, for the kind comments! I've yet to find a crown of one of these, just isolated plates that might have belonged - I guess they fell apart more easily. A specialist told me that they might have been washed in from shallower water.

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Tarquin

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October 2018 Invert/plant Find of the month?? ;) 

-Christian

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Opalised fossils are the best: a wonderful mix between paleontology and mineralogy!

 

Q. Where do dinosaurs study?

A. At Khaan Academy!...

 

My ResearchGate profile

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3 hours ago, The Amateur Paleontologist said:

October 2018 Invert/plant Find of the month?? ;) 

-Christian

I'm not entering at the moment as I've been lucky enough to win before. And I might be wrong but I suspect I can see this month's winner... :D

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Tarquin

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As usual amazing Tarquin. Reminds me of the one I found, same place I suspect.

Don't think I have an ID at the moment.

Criniod 1.JPG

crinoid 1c.JPG

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Never ask a starfish for directions

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both specimens are beautiful.  I love how close up pictures reveal a whole other world of fossils..... :yay-smiley-1:

Everything is generated through your own will power ~ Ray Bradbury
 

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7 minutes ago, Brittle Star said:

As usual amazing Tarquin. Reminds me of the one I found, same place I suspect.

Don't think I have an ID at the moment.

 

That's a fabulous specimen, Janet! Yes, it's not quite the same locality and bed but close. :). I've seen smaller pieces of your species but don't have an ID I'm afraid - I'll ask someone (you'll know him too I think!).

Tarquin

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Thanks Tarquin, I may know him but with my brain, names and faces escape my memory banks. Putting the two together is nigh impossible. Really embarrassing at times.

Never ask a starfish for directions

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26 minutes ago, Brittle Star said:

Thanks Tarquin, I may know him but with my brain, names and faces escape my memory banks. Putting the two together is nigh impossible. Really embarrassing at times.

I'm just the same with humans and names. :D Fossil names stick much better (really!).

 

He's replied - Woodocrinus is the usual genus assigned to that sort of thing but is probably more of a collector's convenience name for a whole group of similar ones.

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Tarquin

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  • 2 weeks later...
11 hours ago, Tidgy's Dad said:

Lovely crinoid. 

That really is a beauty, Tarquin! :wub:

Thanks, Adam! I spotted it on a trip when I didn't have any chisels and couldn't get back for a week. Lesson learned. :) 

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Tarquin

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