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Show Us Your Coral


Frank Menser

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Here is a Silurian colonial coral from Crestwood, KY . and a Rugose coral from the Silurian Brassfield of Estill Co. KY

Like 'em! :thumbsu:

"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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As I had said it in the other post speaking about these fossils (I didn't find again Ssuntok's post...), I made pics of Philippine Psychocidaris ohshimai to show the attachment of its different spines. Here are ! This one shows the Psychocidaris ohshimai

...

This one shows the attachment point of the upper spines

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And the last one shows the attachment point of the lower spines (they are useful not to sink into the marine sediment)

...

As you can see, the part which comes to fasten on the body of the sea urchin is always finer than the spine. It is this part which I can't see on your fossils. There is the other thing which can help to make the difference if your fossils are in calcite : the break of calcite sea urchin spine is never parallel or perpendicular of the spine, we always observe the same angle of break. I forgot to make a photo of a broken spine to show you. You go to have to wait a little ! Eric, enjoy ! Coco

Thanks Coco, That is a crazy-looking urchin, no wonder they named it that!

I see what you mean about the attachments. Are all cidaroids -or all echinoids for that matter- like this? If so, then I'd say it's pretty conclusive that my specimens are corals. I went out again today and found two more specimens and there is no sign of any attachment point, just the striations converging on the center. My camera is acting up so I can't take pics. I'll post them when I manage to.

Edited by Wrangellian
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I wasn't thinking, I could just scan them like I did before. Too bad it took a visit to the 'Imaging with a flat bed scanner' thread to realize that..

But with this method is difficult to get an edge-on view, so that will have to wait.

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Hi,

Psychocidaris ohshimai is a Cidaridea order. Several other species are "crazy-looking urchins". I think I wrote a post on sea urchins with several sorts of spines on them, but perhaps it was into another post...

All Cidaridae have a little attachment point on their spines.

Coco

----------------------
OUTIL POUR MESURER VOS FOSSILES : ici

Ma bibliothèque PDF 1 (Poissons et sélaciens récents & fossiles) : ici
Ma bibliothèque PDF 2 (Animaux vivants - sans poissons ni sélaciens) : ici
Mâchoires sélaciennes récentes : ici
Hétérodontiques et sélaciens : ici
Oeufs sélaciens récents : ici
Otolithes de poissons récents ! ici

Un Greg...

Badges-IPFOTH.jpg.f4a8635cda47a3cc506743a8aabce700.jpg Badges-MOTM.jpg.461001e1a9db5dc29ca1c07a041a1a86.jpg

 

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  • 2 months later...

Just a couple familiar faces....

 

Favosites sp.

Ordovician

Truman Reservoir, Missouri

 

Top. Note the borings in the surface:

 

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Bottom:

 

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This is one of my first fossil finds as a kid. I was bored while fishing with my dad, so I walked the rocky slope below the high-water mark. At the time I thought it was a 'petrified wasp nest'. :)

 

Syringopora sp.

Beil Limestone?, Pennsylvanian

Osage County, Kansas

 

Top:

 

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Side:

 

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Bottom. The coral grew around a cluster of Composita brachiopods:

 

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By coincidence, I found this along a lake shore as well.

Context is critical.

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  • 3 months later...

A fragment of flint coral collection (silica) from Silesia region. Age is not yet known, can anyone help?

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Edited by paleostone
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I found this coral in the mud of Lake Shelbyville (Shelby Co., Illinois) back in the 1980s or early 1990s.

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I am new to fossil collecting so haven't tried to identify it. and this had been sitting in a box for a long time.

Fossil collecting newbie...

(I may be from Illinois but I didn't vote for Obama!)

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post-10091-0-73913100-1349666737_thumb.jpg another coral that's been sitting around since the early 90s. It was found in limestone from a quarry East of Charleston, Illinois.

there is an amusing story behind finding this but I will keep it simple and just say it was found in the parking lot of a bar while I was doing my duty as a designated driver.

Fossil collecting newbie...

(I may be from Illinois but I didn't vote for Obama!)

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Nice coral samples everyone!

harpo568 , halysites sp. and horn coral.

Here is a recently found in the late miocene Crete island, Greece, favites sp. coral bearing some juvenile scleractinian corals of another type onto it.

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  • I found this Informative 1

Astrinos P. Damianakis

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And the last for now :) Thanks for looking Jeff/Tarheel

Can you tell me where the one on the left is from more specifically, and what age and the name if you know it? I think I have a couple just like that with no info.

Wow!! Im not much for coral, but some of you folks have some really nice specimens!!! And Frank, that big one over a foot across is very impressive. Wish I had one like that. I do have some coral but nothing I have personaly gone out and hunted for, sad to say. Here are some pics of some coral pieces where I broke down and bought them.

RB

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Here are some cabochons I cut from a couple of chunks of Indonesian fossil coral.

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Are these all in fact Indonesian coral, and does anybody know where in Indonesia, what age /etc? I have a piece very similar if not identical and these things have a way of coming to me with no info!

Thanks in advance

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Hello

here are corals I have collected:

Dendrophyllia candelabrum and Coesmilia exavata (2.5 cm) from Faxe,Danian, Paleocen Denmark

and a Stylina (5.5cm) from the upper Kimmeridgian of the French Jura, France

and 2 rugosa corals ,Paleocyclus porpita(14mm) and Cystiphyllum sp with a brachiopod du Megastrophia,Wenlock Gotland with

3 ostracods genus Eoleperditia

one bryozoa Ptilodictya lanceolata

Visby formation, Llandovery

and a Stephanophyllia suecica from the upper Campanian from Ignaberga, Scania Sweden.....5mm

D

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  • Enjoyed 1
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I have so many! But my favorite is a recent find, because it is agatized (black, cream and Pink) I cannot wait to get it cut! It weighs 28lbs! The second, is the first one my son found!

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Gratitude and Well Wishes!

Ashley

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here is a larger rugose, found in the Mid-Devonian Tichenor limestone at Smoke Creek in NY :)

it is over 9 inches in length :)

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Edited by xonenine

"Your serpent of Egypt is bred now of your mud by the operation of your sun; so is your crocodile." Lepidus

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On 10/10/2012 at 4:49 PM, Dromiopsis said:

and 2 rugosa corals ,Paleocyclus porpita(14mm) and Cystiphyllum sp with a brachiopod du Megastrophia,Wenlock Gotland with

3 ostracods genus Eoleperditia

one bryozoa Ptilodictya lanceolata

Visby formation, Llandovery

 

I love the variety in that piece.

Context is critical.

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  • 3 months later...
On 2/15/2013 at 7:20 PM, Indy said:

Hapsiphyllum cassedayi (Milne-Edwards & Haime)

Mississippian - Meramecian Series

Salem Formation - St. Louis County, Missouri

 

That is one handsome coral.

Context is critical.

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  • 1 month later...

Glacial erratic from the Holderness coast Yorkshire

Probable id from tqb (Tarquin ) Lithostrotion vorticale.

Dave

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1 Coral,Tabulate,Favosites,Silurian,4cm ,Gotland,Sweden,

2 Coral,Tabulate,Heliolites or Propora,7*8 cm,Silurian ,Gotland,Sweden

3 Coral,Rugose&Bryozoa,4cm,Silurian,Gotland,Sweden

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