jamesp
Cave Dweller 
Member since October 2012
Posts: 36,600
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Post by jamesp on Apr 3, 2015 19:11:59 GMT -5
Left three are oysters, on right are mangrove root casts. Both shallow water critters that occur together along with petrified coral. Bottom two oysters and bottom limb cast appear to have sponge damage.  Better example of sponge borings in a silicified oyster:  side view  |
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Post by drocknut on Apr 3, 2015 19:39:20 GMT -5
Those are really cool. I would never have thought they were oysters. Thanks for showing them.
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,600
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Post by jamesp on Apr 3, 2015 19:59:31 GMT -5
Those are really cool. I would never have thought they were oysters. Thanks for showing them. Most are just pieces Diane. Some of them as big as your hand. Lots of junk and limestone/chert coating was ground off to get to the silicified parts. here is a couple of whole half shells sawn  As found, including coral and limb casts  |
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Fossilman
Cave Dweller
Member since January 2009
Posts: 20,718 
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Post by Fossilman on Apr 3, 2015 20:06:22 GMT -5
Super awesome!!!!!!
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Post by drocknut on Apr 3, 2015 20:51:03 GMT -5
So cool, I still would not have known what to look for to find those. I'll bet it's a lot of work getting down to the silicified parts.
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,600
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Post by jamesp on Apr 4, 2015 3:36:14 GMT -5
So cool, I still would not have known what to look for to find those. I'll bet it's a lot of work getting down to the silicified parts. Throw the whole bunch in a big tumbler and let it grind of the soft stuff for a week or two. About half of them are junk and the others can have pretties in them. This creek is loaded with them. it is on the Florida/Georgia line. There is a few inches of sand on top of the fossil layer. It is a 'play in the creek' deal  |
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