kennedyskorner Posted October 25, 2014 Share Posted October 25, 2014 While researching the links that all of you have posted to help me in my earlier posts, I came across pictures of Crinoid stems and a bell went off that I have seen something similar to that in our collection recently. After looking, and digging and looking again.. I found it. Is this a Crinoid stem impression? Its approx. 2 1/4 " long and 1/4" wide - Also from Lawrence county, Missouri. "Don't let the world steal your smile, instead, use your smile - to steal the world." Link to comment Share on other sites More sharing options...
Ludwigia Posted October 25, 2014 Share Posted October 25, 2014 I can go along with that. Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
snakebite6769 Posted October 25, 2014 Share Posted October 25, 2014 Yes, that is an imprint of a Crinoid stem. Link to comment Share on other sites More sharing options...
tmaier Posted October 26, 2014 Share Posted October 26, 2014 (edited) Yes, it is an imprint, and you can also call it a "mold". The actual fossil is gone, but the matrix has a very good mold of what it was. They are highly collectible, as much as the fossil itself because it shows a lot of features of the original fossil. Here's a photo of a mold of a fossil plant stem. The plant is gone, but the impression or mold remains very clearly. Sometimes a mold is formed because the actual fossil fell out, but sometimes you get a mold when the fossil dissolves away just leaving a hole where the fossil used to be. If a mold is formed and then becomes filed with sediment or mineral, then you end up with a cast. http://www.google.com/images?q=fossil+cast+and+mold&btnG=Search&hl=en&gbv=1 Edited October 26, 2014 by tmaier 1 Link to comment Share on other sites More sharing options...
kennedyskorner Posted October 27, 2014 Author Share Posted October 27, 2014 Yes, it is an imprint, and you can also call it a "mold". The actual fossil is gone, but the matrix has a very good mold of what it was. They are highly collectible, as much as the fossil itself because it shows a lot of features of the original fossil. Here's a photo of a mold of a fossil plant stem. The plant is gone, but the impression or mold remains very clearly. CALAMIT1.JPG Sometimes a mold is formed because the actual fossil fell out, but sometimes you get a mold when the fossil dissolves away just leaving a hole where the fossil used to be. If a mold is formed and then becomes filed with sediment or mineral, then you end up with a cast. http://www.google.com/images?q=fossil+cast+and+mold&btnG=Search&hl=en&gbv=1 Thank you for the awesome info once again I have quite a few imprints in our collection that I would need to try to identify (once I get them all sorted out). It's a slow process but getting it done. If I get confused I know where to go with them "Don't let the world steal your smile, instead, use your smile - to steal the world." Link to comment Share on other sites More sharing options...
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