Brad1978 Posted November 16, 2021 Share Posted November 16, 2021 (edited) Hello folks. I'm new here but I used to be a member about 5 years ago but wasn't really active so I just started a new account. I have this rock here I found on the Dry Frio River here in Texas. The shape is strangely symmetrical and it's silica of some kind which is what organic matter turns into over a period of millions of years if the conditions are right. Does this shape look familiar to anybody? It has the shape of a all sting ray or something similar. The curvature on the top is also symmetrical. I've tried sanding the petina off it but it hardly worked. Edited November 16, 2021 by Brad1978 Front view of rock Link to comment Share on other sites More sharing options...
Brad1978 Posted November 16, 2021 Author Share Posted November 16, 2021 I forgot to scale the photo but it's about four inches wide and an inch and a half thick Link to comment Share on other sites More sharing options...
Nanotyrannus35 Posted November 16, 2021 Share Posted November 16, 2021 Sorry, I'm not seeing any bone or fossil structure. Looks like just a suggestive shaped rock. Enthusiastic Fossil Hunter Link to comment Share on other sites More sharing options...
Brad1978 Posted November 16, 2021 Author Share Posted November 16, 2021 Very well could be just a rock but if you were to see it in person you'd see why I had my suspicion. The Dry Frio has tons of dead sea life amongst it's rocks. Mainly echinoids, rudists and several different species of mollusks. Some may not have been identified yet. The sea urchin that I found got verified on here but it was one that had been found already. I have other specimens that I'm unsure of. Can I post pictures of them separately or do they all need to be under this particular topic I made? Link to comment Share on other sites More sharing options...
JohnJ Posted November 16, 2021 Share Posted November 16, 2021 Separately is better. The human mind has the ability to believe anything is true. - JJ Link to comment Share on other sites More sharing options...
Ludwigia Posted November 16, 2021 Share Posted November 16, 2021 47 minutes ago, Brad1978 said: I have other specimens that I'm unsure of. Can I post pictures of them separately or do they all need to be under this particular topic I made? Yes certainly, but please post them separately as JohnJ has suggested. I would also like to ask you to please make sure that your photos are better quality (more sharply focussed) than these. Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
jno Posted November 16, 2021 Share Posted November 16, 2021 If you could post more, sharply focused photos of this, we may be able to help. These are just too blurry to make out anything. Link to comment Share on other sites More sharing options...
Brad1978 Posted November 21, 2021 Author Share Posted November 21, 2021 I'll try to get better photos. Using my smartphone for this but maybe if I find the right lighting I can get some better ones. Link to comment Share on other sites More sharing options...
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