carloscinco
fully equipped rock polisher
Member since July 2008
Posts: 1,639
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Post by carloscinco on Jul 3, 2011 20:41:46 GMT -5
I found this on my trip to Bob's Nob on the north end of Falcon lake. I didn't set foot on Bob's Nob but I did some roadside hunting and this caught my eye. For some reason it makes me think it's an urchin but I couldn't find a match on the web. It's 3"wide, 3.5" tall and about 1" thick. Does anybody recognize this or share ideas? Thanks
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Sabre52
Cave Dweller
Me and my gal, Rosie
Member since August 2005
Posts: 20,466
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Post by Sabre52 on Jul 3, 2011 21:20:47 GMT -5
Looks more like a cast of both connected valves of a shoe clam of some type....Mel
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Fossilman
Cave Dweller
Member since January 2009
Posts: 20,685
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Post by Fossilman on Jul 3, 2011 22:39:45 GMT -5
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carloscinco
fully equipped rock polisher
Member since July 2008
Posts: 1,639
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Post by carloscinco on Jul 4, 2011 6:40:54 GMT -5
Wow! Fantastic web site, thanks.
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Post by johnjsgems on Jul 4, 2011 7:59:33 GMT -5
Urchins will look like fat sand dollars. Pretty much like the urchin "shells" you find on the beach with spines gone but the hollow will be filled. At least that is the way the Madagascar ones I have are.
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carloscinco
fully equipped rock polisher
Member since July 2008
Posts: 1,639
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Post by carloscinco on Jul 4, 2011 8:43:59 GMT -5
Thanks for the input folks. Mel, it does look like a casting than actual shell material. There's a lot of Texas fossil sites on the net, pretty neat.
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Post by jakesrocks on Jul 4, 2011 15:20:59 GMT -5
As soon as I can find it, I'll shoot a pic of a fossil sea urchin and post it here.
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Post by jakesrocks on Jul 4, 2011 19:03:01 GMT -5
Found it. First the top view to show the 5 segments. Next the side view to show thickness. Note the little dots on the side. These are the attachment spots for the spines.
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