Guguita2104 Posted July 27, 2015 Share Posted July 27, 2015 (edited) I found all these fossils in a Jurassic beach, in Porto de Mós (in that we can find rare and well-preserved echinoderms).However there are some strange items and for that I need help to Id. 1-Sea urchin or mineral concentration(???) 2-Bivalve/brachiopoda or just a quartz concentration? Edited July 28, 2015 by Guguita2104 Link to comment Share on other sites More sharing options...
Guguita2104 Posted July 27, 2015 Author Share Posted July 27, 2015 3-Crinoid (on left) and starfish (on right)? 4-Sea urchin thorn Link to comment Share on other sites More sharing options...
Guguita2104 Posted July 28, 2015 Author Share Posted July 28, 2015 Sorry, I forgot to refer that they are from Dogger (middle Jurassic). Link to comment Share on other sites More sharing options...
FossilDAWG Posted July 28, 2015 Share Posted July 28, 2015 Sorry but I see neither a crinoid nor a starfish. All I see are trace fossils (burrows). The sea urchin spine is nice. Don Link to comment Share on other sites More sharing options...
Guguita2104 Posted July 28, 2015 Author Share Posted July 28, 2015 (edited) Thanks...Do you know what types of animals did that traces? Edited July 30, 2015 by Guguita2104 Link to comment Share on other sites More sharing options...
Guguita2104 Posted July 28, 2015 Author Share Posted July 28, 2015 I'm thinking and the fossil that I refered as a crinoid as a particular texture to be a trace fossil...Am I right or wrong?Can someone explain me? Link to comment Share on other sites More sharing options...
abyssunder Posted July 31, 2015 Share Posted July 31, 2015 (edited) I don't know if I understand your question right, but as Don said, pic.4 resembles an echinoid spine (very nice BTW) not an ichnofossil (trace fossil) with particular texture.Here I try to show you similar ones from Mineral Wells,Palo Pinto co.,Texas and Lake Bridgeport,Wise. http://northtexasfossils.com/2007-01-27.htm What's in pic.3 I also think are trace fossils,not echinoid spines or crinoid remains (at least in lungitudinal section the stalk or the crown should look different from yours). In pic.2 maybe you are lucky to have a crinoid calix (but I'm not convinced about this ID).In pic.1 the images are unfocused and blury, so is not much to say about the content,sorry. Edited July 31, 2015 by abyssunder " 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...
Guguita2104 Posted August 2, 2015 Author Share Posted August 2, 2015 Thanks for the info...About pic 1. I try to edit it ...It's the best I can do. Link to comment Share on other sites More sharing options...
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