Jonelle Posted January 10, 2017 Share Posted January 10, 2017 Does anyone know what this is? We found it at a abandoned construction site.. it had some sharks teeth inside.. its 7in x 3 in at its widest point. Thanks ! I'm almost thinking it looks like a huge phosphate module? I really have no clue. Link to comment Share on other sites More sharing options...
Jonelle Posted January 10, 2017 Author Share Posted January 10, 2017 Link to comment Share on other sites More sharing options...
Darktooth Posted January 10, 2017 Share Posted January 10, 2017 Is this object hard like rock? I like Trilo-butts and I cannot lie. Link to comment Share on other sites More sharing options...
abyssunder Posted January 11, 2017 Share Posted January 11, 2017 Maybe bivalve borings in hard substrate . 4 " We are not separate and independent entities, but like links in a chain, and we could not by any means be what we are without those who went before us and showed us the way. " Thomas Mann My Library Link to comment Share on other sites More sharing options...
Jonelle Posted January 11, 2017 Author Share Posted January 11, 2017 @darctooth it is hard in the outside m, but almost completely hollow with little cells on the inside, it's hard to capture in a pic on my phone but I tried.. Link to comment Share on other sites More sharing options...
Jonelle Posted January 11, 2017 Author Share Posted January 11, 2017 @abyssunder thanks I'll look into that more.. I can sees few more shark teeth.. imprinted in the outside ..pretty neat Link to comment Share on other sites More sharing options...
Jonelle Posted January 11, 2017 Author Share Posted January 11, 2017 Some more imprints.. Link to comment Share on other sites More sharing options...
Darktooth Posted January 11, 2017 Share Posted January 11, 2017 This object is really interesting, but I don't know what to make of it. It would be great if you could expose the sharksteeth without ruining the matrix. I like Trilo-butts and I cannot lie. Link to comment Share on other sites More sharing options...
ynot Posted January 11, 2017 Share Posted January 11, 2017 Any pictures of the shark teeth? Tony Darwin said: " Man sprang from monkeys." Will Rogers said: " Some of them didn't spring far enough." My Fossil collection - My Mineral collection My favorite thread on TFF. Link to comment Share on other sites More sharing options...
Vieira Posted January 11, 2017 Share Posted January 11, 2017 Jonelle Here in Portugal I find some stones like that. I don't see any shark teeth in the pictures. The suggestive forms may let you think that are shark teeth. These stones stay long time in the sea and some organisms do that holes. Inside those holes, normally are some bivalves living... Link to comment Share on other sites More sharing options...
old bones Posted January 11, 2017 Share Posted January 11, 2017 I think that I see a shark tooth here. Link to comment Share on other sites More sharing options...
Vieira Posted January 11, 2017 Share Posted January 11, 2017 Yes in this Picture it seems a shark tooth. Maybe the tooth stayed stuck in one of the stone holes... This stones rolled in the sand and sea.... Jonelle this is the single tooth in the stone or you can see more? Link to comment Share on other sites More sharing options...
Plax Posted January 11, 2017 Share Posted January 11, 2017 this is probably a phosphatized rip up clast that has been bored by lithophagous mollusks such as Pholids. These are found in lag deposits along with other resistant clasts such as sharks teeth. Basically these are created when the sealevel rises and existing sediments are leached and eroded leaving only concentrations of resistant things like pebble, shark teeth etc. A rip up clast is a piece of a lower sediment that has been ripped up by the action of the transgressing sea and becomes indurated (or was possibly already indurated (made hard like stone)) and phosphatized along with many of the other lag constituents. Another possibility which requires the same sequence of events is that this is a manatee rib that has been badly worn in a pebble lag to the point of being unrecognizable. It would still be subject to boring by lithophagous mollusks. If you google "pholid clam burrows in rock" you'll get a lot more information. Your shark tooth was part of a lag deposit and found its way into the pholid burrow when they were both being moved around in the modern sea or in the original lag. The sorted pebbles and shark teeth you see in the modern beach environment are lag concentrations also. They are sorted by weight, size and shape. Sorry for the ramble. This is an elaboration of what Abyssunder said. 7 Link to comment Share on other sites More sharing options...
Jonelle Posted January 11, 2017 Author Share Posted January 11, 2017 3 hours ago, Vieira said: Yes in this Picture it seems a shark tooth. Maybe the tooth stayed stuck in one of the stone holes... This stones rolled in the sand and sea.... Jonelle this is the single tooth in the stone or you can see more? There were more along with some pebbles that came out when I rinsed it.. and I think I see one imprint on the side but I'll have to get a better look at it today Link to comment Share on other sites More sharing options...
Jonelle Posted January 11, 2017 Author Share Posted January 11, 2017 Thanks @Plax I'm going to be researching it today, and taking a look at all our other findings.. I was also thinking before I rinsed it that it looked like a possible manatee bone. Thanks for the great information! Link to comment Share on other sites More sharing options...
Vieira Posted January 11, 2017 Share Posted January 11, 2017 47 minutes ago, Jonelle said: Thanks @Plax I'm going to be researching it today, and taking a look at all our other findings.. I was also thinking before I rinsed it that it looked like a possible manatee bone. Thanks for the great information! I agree with most that Plax said, but in relation with manatee bone I disagree...I don't see any structure of bone in the pictures. 1 Link to comment Share on other sites More sharing options...
Plantguy Posted January 12, 2017 Share Posted January 12, 2017 (edited) Yep, I've seen pieces like that. It has had the heck bored out of it as Abyssunder and Don and others have already indicated. It does look to me more like a clast (could very well be phosphatic) than a dugong or whale rib bone fragment that are fairly common down here. The dugong bones are extremely dense and amazingly heavy for their size. They do occasionally also show some internal layering on the ends or in the clam bore holes---could be there but I dont see that. Neat to find a shark tooth within the specimen! Edit: for what its worth here are some photos of bones of external and internal textures along with a few borings...my apologies if I've already posted these..I know I was going to post em but........ Regards, Chris Edited January 12, 2017 by Plantguy Adding bone photos 1 Link to comment Share on other sites More sharing options...
Harry Pristis Posted January 12, 2017 Share Posted January 12, 2017 I agree with pholadid borings into phosphatic nodule. 3 http://pristis.wix.com/the-demijohn-page What seest thou else In the dark backward and abysm of time? ---Shakespeare, The Tempest Link to comment Share on other sites More sharing options...
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