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Show Us Your Crinoids!


Dicranurus

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this is the first crinoid crown Ive found. Pulaskicrinus, upper Mississippian, Bangor limestone

Its in a weird position in the matrix..I have dared not to prep it.

here are the arms (which is what I saw on the surface.

post-2953-0-51161800-1308407093_thumb.jpg

the calyx

post-2953-0-75329600-1308407213_thumb.jpg

and a profile

post-2953-0-55790600-1308407261_thumb.jpg

also, heres a tiny Ordovician crinoid column wrapped around a bryo

post-2953-0-42444300-1308407494_thumb.jpgpost-2953-0-23860000-1308407530_thumb.jpg

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Congrats on your first crinoid crown!

The prep looks...daunting :o

"There has been an alarming increase in the number of things I know nothing about." - Ashleigh Ellwood Brilliant

“Try to learn something about everything and everything about something.” - Thomas Henry Huxley

>Paleontology is an evolving science.

>May your wonders never cease!

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Here is one I picked up at an auction, it came in a flat with others. All the info I got was, Crinoid - Missouri

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post-7322-0-35943800-1323302687_thumb.jpg

post-7322-0-84829900-1323302688_thumb.jpg

Troy Nelson

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Ethelocrinus magister

Pennsylvanian

Kansas City area

A crown with a mutated calyx:

post-6808-0-32546200-1323337436_thumb.jpg

The plates seem to have divided into several irregular pieces.

Compare it to a normal Ethelocrinus with 5-sided symmetry:

post-6808-0-08793000-1323337450_thumb.jpg

Edited by Missourian

Context is critical.

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Here are some X-radiographs of a few Devonian crinoids from Bundenbach.

The Codiacrinus is 45 cm long. You can see how I've inverted the original X-Radiograph.

The piece with three crinoids shows Bactrocrinites jaeckeli, Thallocrinus procerus

and Rhadinocrinus nanus. The Thallocrinus is ca 6 cm long. The Bactrocrinites is shown

in a detail. The Botryocrinus (Bathericrinus) is 8 cm long, a rarity in its own right, but this

one also has a tiny (1 cm) sea spider (pycnogonid, Palaeothea) attached.

Breathtakingly beautiful ... I've never seen X-Rays like this before :wub:

Qurum's post with the X-Ray images is reply #24 Click Here

Flash from the Past (Show Us Your Fossils)
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Here's a slab of mostly Ectenocrinus(I think) from the Galena formation of Southeast Minnesota. It is very slowly being prepped with an air abrasive unit and still has a long way to go.

Galena Formation

Ordovician

Southeast Minnesota

Original

post-3840-0-37738700-1332513145_thumb.jpg

"Enhanced"

post-3840-0-49059400-1332513158_thumb.jpg

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Woh ! Is it "made of" pyrite ?

Coco

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Ma bibliothèque PDF 2 (Animaux vivants - sans poissons ni sélaciens) : ici
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Un Greg...

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Woh ! Is it "made of" pyrite ?

Coco

Year... that is a pyrite one. It looks nicer in the drawer, the golden shine does not come through with the camera.

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Sorry about the bad picture, these are very small....

Bourgueticrinus sp.

upper Cretaceous

Kent - UK

post-4683-0-69179300-1333216874_thumb.jpg

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  • 5 months later...

Wow! Those are some great crinoids. I don't have any near that nice but I have a few stems from the upper Mississippian Imo Formation (?) near Leslie, AR in Van Buren County.

post-9361-0-80270700-1346620054_thumb.jpg

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No Crinoids here either but I'd love to find some. Crinoids are our state fossil but all I have found are simple stems or individual segments.

I suppose I need to get my snoot out of the Ordovician strata once in a while! LOL

Edited by Empty Pockets
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  • 4 weeks later...

Hi!

Very nice Crinoids!!

My first presentation of a fossil in this forum:

Ammonicrinus leunisseni BOHATÝ 2011, found in the early Givetium of the Eifel-Syncline.

A weird crinoid, the small crown is completely covered by the furled stem. One of my favorite :)

Size of the specimen is about 2 centimeter.

For further Informations about this fancy Crinoid, check this out:

http://www.app.pan.p...app20100020.pdf

Cheers!

Nils

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post-10075-0-91869700-1348665442_thumb.jpg

Edited by nils
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Hi!

Very nice Crinoids!!

My first presentation of a fossil in this forum:

Ammonicrinus leunisseni BOHATÝ 2011, found in the early Givetium of the Eifel-Syncline.

A weird crinoid, the small crown is completely covered by the furled stem. One of my favorite :)

Size of the specimen is about 2 centimeter.

Cheers!

Nils

Wonderful, and strange!

"There has been an alarming increase in the number of things I know nothing about." - Ashleigh Ellwood Brilliant

“Try to learn something about everything and everything about something.” - Thomas Henry Huxley

>Paleontology is an evolving science.

>May your wonders never cease!

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Great, just to add to the confusion, they come up with a crinoid that looks like an ammonite! ;) Next it'll be a clam that looks like a tree!

So many weird and wonderful things from the Paleozoic..

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Fragments of two species crinoids from bathonian on polish territory. Can anyone identify them to genus or species ?

li.jpg

Thanks.

Edited by paleostone
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Fragments of two species crinoids from bathonian on polish territory. Can anyone identify them to genus or species ?

li.jpg

Thanks.

How did you find so many?

Those look like columnal crinoid stems to me - I find the occassional stems, but mostly just trace or embeded - like these ones, below.

5-31-12f_zpsa12c9f8d.jpg

5473cd3d.jpg

....and;

a14c4f4b.jpg

Here is one still in the matrix....and I need sunlight again to photo my largest columnal crinoid find.

10-8-12-crinoida_zps9d6a9e55.jpg

:)

Edited by Roadrunner
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