Napoleon North Posted January 8, 2017 Share Posted January 8, 2017 Hi This is ammonite or nautilus fossil? Location: Grabówka ,Częstochowa, Poland Size: near 21 mm x 22-23 mm Age:Jurassic Link to comment Share on other sites More sharing options...
FossilDudeCO Posted January 8, 2017 Share Posted January 8, 2017 I would consider this a nautiloid. Link to comment Share on other sites More sharing options...
Fossildude19 Posted January 8, 2017 Share Posted January 8, 2017 Cleaned up the pictures a bit. 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...
DevonianDigger Posted January 8, 2017 Share Posted January 8, 2017 I second nautiloid, but IMO, it's tough to tell. I could understand arguments that it is an ammonite. But Tim's pretty sharp on this stuff, so I'll side with him for now! Jay A. Wollin Lead Fossil Educator - Penn Dixie Fossil Park and Nature Reserve Hamburg, New York, USA Link to comment Share on other sites More sharing options...
taj Posted January 8, 2017 Share Posted January 8, 2017 I vote for ammonite ! Link to comment Share on other sites More sharing options...
Ramon Posted January 8, 2017 Share Posted January 8, 2017 I think that it is an Ammonite, but I not an expert. Wait for others to reply!!! "Without fossils, no one would have ever dreamed that there were successive epochs in the formation of the earth" - Georges Cuvier Link to comment Share on other sites More sharing options...
abyssunder Posted January 8, 2017 Share Posted January 8, 2017 I think, ... in Nautilus, the crenulate keel of the ventral ornamentation is not present, but in Ammonite could be there (not in all cases), so, I'll go with Ammonite in the distinguishing character. The comparative picture is from 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...
Ludwigia Posted January 9, 2017 Share Posted January 9, 2017 We need better pictures that show more distinguishing features in order to decide properly. Everything else is guesswork at this point. I also tend more towards ammonite. 1 Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
Ludwigia Posted January 9, 2017 Share Posted January 9, 2017 Family Kosmoceratidae? Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
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