juan Posted November 20, 2016 Share Posted November 20, 2016 Hi everybody, it passed too much time since I was here. I need help. One friend found this in Lower Devonian sediments in Spain. He thinks is a fish tooth but I'm not sure about it. What do you think? Regards Juan Link to comment Share on other sites More sharing options...
Fossildude19 Posted November 20, 2016 Share Posted November 20, 2016 This looks more like a crinoid or trilobite spine, to me. What is the size of the item? I think removal of some matrix from around the item would tell us more. Regards, 1 Tim - VETERAN SHALE SPLITTER VFOTM --- APRIL - 2015 __________________________________________________ "In every walk with nature one receives far more than he seeks." John Muir ~ ~ ~ ~ ><))))( *> About Me Link to comment Share on other sites More sharing options...
tmaier Posted November 20, 2016 Share Posted November 20, 2016 I'm thinking it is a spine from a brachiopod, bivalve, or echnoid. It looks like more of the fossil is still buried in the matrix, and could be exposed. There is some white material at a diagonal across the photo, and I think that is associated with the spine/tooth. This would be a delicate prep job. It seems too long and wobbly to be a tooth, which is why it seems like a spine to me. Not that I know a lot about teeth. Link to comment Share on other sites More sharing options...
TqB Posted November 20, 2016 Share Posted November 20, 2016 Crinoid spine was my first thought too, doesn't look fishy. Tarquin Link to comment Share on other sites More sharing options...
tmaier Posted November 20, 2016 Share Posted November 20, 2016 I replied at the same time as fossildude, and agree with him. Link to comment Share on other sites More sharing options...
juan Posted November 20, 2016 Author Share Posted November 20, 2016 The fossils has a measure of 7 mm. He shown me this too. He thinks are vertebrar, but I think are crinoid. Link to comment Share on other sites More sharing options...
Fossildude19 Posted November 20, 2016 Share Posted November 20, 2016 Almost certainly crinoid, not vertebrae. He needs to realize that there weren't many bony fish in the Devonian, and none with spine shaped teeth, that I am aware of. Regards, Tim - VETERAN SHALE SPLITTER VFOTM --- APRIL - 2015 __________________________________________________ "In every walk with nature one receives far more than he seeks." John Muir ~ ~ ~ ~ ><))))( *> About Me Link to comment Share on other sites More sharing options...
juan Posted November 20, 2016 Author Share Posted November 20, 2016 And that "tooth", it could be a conodont? Link to comment Share on other sites More sharing options...
Fossildude19 Posted November 20, 2016 Share Posted November 20, 2016 7 mm would be rather large for a conodont. Not shaped like one, either. Tim - VETERAN SHALE SPLITTER VFOTM --- APRIL - 2015 __________________________________________________ "In every walk with nature one receives far more than he seeks." John Muir ~ ~ ~ ~ ><))))( *> About Me Link to comment Share on other sites More sharing options...
tmaier Posted November 20, 2016 Share Posted November 20, 2016 It seems too large to be a conodont tooth, and like I mentioned, it is a bit wobbly. Look at conodont teeth, or just teeth in general, and they are a more smooth curve, because they have to take a force repeatedly. A wobbly spike has a "flaw" in that it does not make a good tooth. So, no definitive evidence here, but my opinion, not a conodont tooth. Link to comment Share on other sites More sharing options...
tmaier Posted November 20, 2016 Share Posted November 20, 2016 Agian, I'm agreeing with fossildide, but with a minute delay! Link to comment Share on other sites More sharing options...
tmaier Posted November 20, 2016 Share Posted November 20, 2016 Exposing the fossil more would likely determine what it is from. Link to comment Share on other sites More sharing options...
juan Posted November 20, 2016 Author Share Posted November 20, 2016 Thanks for your help guys, it was so useful. Like Beatles said: with a little help from my friends He found this braquiopod too in the same rock. Lovely huh? Link to comment Share on other sites More sharing options...
Fossildude19 Posted November 20, 2016 Share Posted November 20, 2016 Nice brachiopod - looks similar to Pseudoatrypa devoniana. Tim - VETERAN SHALE SPLITTER VFOTM --- APRIL - 2015 __________________________________________________ "In every walk with nature one receives far more than he seeks." John Muir ~ ~ ~ ~ ><))))( *> About Me Link to comment Share on other sites More sharing options...
tmaier Posted November 20, 2016 Share Posted November 20, 2016 Yep, a very fossil-rich matrix. Your friend might want to try "prepping" some of these rocks to expose the fossils more. The simpliest way to start is with vinegar and a soft toothbrush. Always start learning with the pieces that you DON'T like, so as you learn, you make your mistakes on pieces that are not important. Learning to expose the fossils ("prepping") will often yeild nice looking fossils like that brachiopod. Go to the "Fossil Prep" area of this site and see what the pros are doing. They are using expensive equipment, but you can get start for less than a dollar. =-) 1 Link to comment Share on other sites More sharing options...
abyssunder Posted November 20, 2016 Share Posted November 20, 2016 The first specimen in question looks to be a crinoid primibrachial plate with spine. Similar ones here : 1 " 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...
fossiling Posted November 20, 2016 Share Posted November 20, 2016 I believe (and I may very well be way off course) that the object in question is the nostral spine of a sawfish or sawshark. Keep looking! They're everywhere! Link to comment Share on other sites More sharing options...
juan Posted November 20, 2016 Author Share Posted November 20, 2016 Thanks Tmaier, I'll do it Thank you everybody for your help Link to comment Share on other sites More sharing options...
ynot Posted November 20, 2016 Share Posted November 20, 2016 1 hour ago, fossiling said: I believe (and I may very well be way off course) that the object in question is the nostral spine of a sawfish or sawshark. Way to old for it to be a rostral spine from a sawfish. 1 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...
tmaier Posted November 20, 2016 Share Posted November 20, 2016 Sawfish hadn't been invented yet. Link to comment Share on other sites More sharing options...
fossiling Posted November 25, 2016 Share Posted November 25, 2016 On Sunday, November 20, 2016 at 11:25 PM, tmaier said: Sawfish hadn't been invented yet. Keep looking! They're everywhere! Link to comment Share on other sites More sharing options...
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