oldtimer Posted February 25, 2018 Share Posted February 25, 2018 I am wondering if this is a Ginkgo leaf or something else? Looks like a Mazon Creek fossil to me. Link to comment Share on other sites More sharing options...
izak_ Posted February 25, 2018 Share Posted February 25, 2018 If its from Mazon Creek its not a ginkgo. But even if its not I don't think its a ginkgo. Maybe @Nimravis will be able to help. Is this specimen yours? Link to comment Share on other sites More sharing options...
Ludwigia Posted February 25, 2018 Share Posted February 25, 2018 Well, it certainly is Ginkgo-like, so maybe it's not from Mazon Creek. Can you show some close-ups of the leaf patterns? Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
Rockwood Posted February 25, 2018 Share Posted February 25, 2018 Knowing the age would be helpful. Most older forms have highly divided leaves. Link to comment Share on other sites More sharing options...
Nimravis Posted February 25, 2018 Share Posted February 25, 2018 It does look like a Mazon Creek concretion, and if it is, I would say it is a Cyclopteris leaf. 3 Link to comment Share on other sites More sharing options...
oldtimer Posted February 25, 2018 Author Share Posted February 25, 2018 No it's not mine. Girlfriend sent me the picture. Saw it in a lot of others. It looked like a Mazon Creek style with the other similar ones. Enlarging my picture did not bring out any better details. I am not familiar with all the different species found in the Mazon Creek area. It just resembled leaves similar to a Ginkgo. Maybe a fern? Link to comment Share on other sites More sharing options...
Rockwood Posted February 25, 2018 Share Posted February 25, 2018 Something about the shape makes me think it may be part of a reproductive structure. (cone like) Link to comment Share on other sites More sharing options...
abyssunder Posted February 25, 2018 Share Posted February 25, 2018 3 " 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...
Rockwood Posted February 25, 2018 Share Posted February 25, 2018 One of these even has that slight fold. Link to comment Share on other sites More sharing options...
abyssunder Posted February 25, 2018 Share Posted February 25, 2018 2 " 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...
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