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Fossil ID


PeteG

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Hi

 

Apologies if I'm going about this in the wrong way. We found this today at Ogmore beach in the Vale of Glamorgan (UK) which is part of the Jurassic coast. We've been able to identify most of what we found, but this one has stumped us.

 

Any help appreciated.

 

 

IMG_1140.JPG

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Ha! that's what we thought at first, but I can confirm that no amount of spit and polish will move it! 

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11 minutes ago, GeschWhat said:

Way to make an entrance...welcome to the forum!

 

Bird poop was my first thought too!. Not my area, but weren't there spines on some ammonites? 

Isn't poop, your first thought on everything?:rofl:

Dipleurawhisperer5.jpg

I like Trilo-butts and I cannot lie.

 

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Hi,

 

It's Michelinia sp., a Lower Carboniferous tabulate coral - there's Carboniferous as well as Jurassic at Ogmore.

I think that if you wet or polish it you'll see some internal detail (curved plates - the tabulae) inside the individual corallites, as in my second photo.

 

This is also from Ogmore. The preservation is different from yours as it's showing the external corallite calices full of dark sediment. Yours is an internal section filled with calcite.

IMG_2325.thumb.jpg.31ab4ee29dcf376eac13fa25145ee3e6.jpg

 

Internal detail of one from another locality:

58c5af8235857_IMG_0360ccopy.thumb.jpg.b8e227d82f312940f045c3e667cc26c1.jpg

Tarquin

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