rocket Posted February 21 Share Posted February 21 I have had really a lof of ginkgo-leafs from dakota, but never some like the ones I show. Have been asked about if it is real or not. I would assume it is artwork. comes from US, cretaceous, this is the info I got Size of the leaf is around 10 cm wide (around 4") Link to comment Share on other sites More sharing options...
TqB Posted February 21 Share Posted February 21 Looks like painting on a bit of Palaeozoic slate. 6 Tarquin Link to comment Share on other sites More sharing options...
Ludwigia Posted February 21 Share Posted February 21 Certainly looks artistic. Can you determine which medium was used? 1 Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
rocket Posted February 21 Author Share Posted February 21 24 minutes ago, Ludwigia said: Certainly looks artistic. Can you determine which medium was used? do not know, looks like a hard slab from ?Bundenbach or whereever I was asked about it, if it is real or if I know cretaceous ginkgo like this. I worked really a long time with cretaceous fossils and have seen a lot, but this is strange and I would assume it is not from upper cretaceous, but from lower 2024 2 1 Link to comment Share on other sites More sharing options...
oilshale Posted February 21 Share Posted February 21 (edited) Hmm, looks artificial. There are a couple of similar-looking, shiny gingko leaves on sale. Said to be Gingko crenei (doesn't seem to exist - can't find this name in the internet) from Morton Co, ND. But the slab looks different. Edited February 21 by oilshale 1 Be not ashamed of mistakes and thus make them crimes (Confucius, 551 BC - 479 BC). Link to comment Share on other sites More sharing options...
Yoda Posted February 21 Share Posted February 21 The Gingko material from ND that I have seen is on a yellowish red matrix MotM August 2023 - Eclectic Collector Link to comment Share on other sites More sharing options...
FranzBernhard Posted February 21 Share Posted February 21 Does it look like extant Gingko? Looks like a print - leaf covered in white paint and very carefully pressed onto the rock slab. Franz Bernhard 1 Link to comment Share on other sites More sharing options...
rocket Posted February 21 Author Share Posted February 21 12 minutes ago, FranzBernhard said: Does it look like extant Gingko? Looks like a print - leaf covered in white paint and very carefully pressed onto the rock slab. Franz Bernhard yep, this is what it reminds me, too. Print... Link to comment Share on other sites More sharing options...
Wrangellian Posted February 21 Share Posted February 21 Ha! I should show this to my aunt... She was thinking about painting a ginkgo leaf onto a piece of Princeton matrix (e.g. a dark watercolor on light matrix), not to fool anyone, but just as artwork, though I don't know if she ever will. Link to comment Share on other sites More sharing options...
rocket Posted February 21 Author Share Posted February 21 (edited) 27 minutes ago, Wrangellian said: Ha! I should show this to my aunt... She was thinking about painting a ginkgo leaf onto a piece of Princeton matrix (e.g. a dark watercolor on light matrix), not to fool anyone, but just as artwork, though I don't know if she ever will. great idea As I gave the base for this idea you or she has to invite me for a coffee when we meet some day Edited February 21 by rocket Link to comment Share on other sites More sharing options...
Wrangellian Posted February 21 Share Posted February 21 5 minutes ago, rocket said: great idea As I gave the base for this idea you have to invite me for a coffee when we meet some day She got the idea on her own when I bought this specimen last year, but OK! Link to comment Share on other sites More sharing options...
rocket Posted February 21 Author Share Posted February 21 1 hour ago, Wrangellian said: She got the idea on her own when I bought this specimen last year, but OK! , looks like I was toooooooooooooooo late so, I will invite 1 Link to comment Share on other sites More sharing options...
FranzBernhard Posted February 21 Share Posted February 21 What is this rock(?) to the left of the Gingko, @Wrangellian? Thanks! Franz Bernhard Link to comment Share on other sites More sharing options...
JorisVV Posted February 22 Share Posted February 22 I agree with the others. Looks very much like a fake/painting. Link to comment Share on other sites More sharing options...
Wrangellian Posted February 22 Share Posted February 22 On 2/21/2024 at 7:10 AM, FranzBernhard said: What is this rock(?) to the left of the Gingko, @Wrangellian? Thanks! Franz Bernhard One guess.... (yes it's a rock) 1 Link to comment Share on other sites More sharing options...
paleoflor Posted February 22 Share Posted February 22 On 2/21/2024 at 12:54 PM, oilshale said: Gingko crenei Could this be a misspelling of Ginkgo cranei, perhaps? Searching for green in the dark grey. Link to comment Share on other sites More sharing options...
FranzBernhard Posted February 22 Share Posted February 22 3 hours ago, Wrangellian said: One guess.... (yes it's a rock) Well: Chrysanthemum stone - Wikipedia from VI? Franz Bernhard Link to comment Share on other sites More sharing options...
piranha Posted February 22 Share Posted February 22 1 hour ago, paleoflor said: Could this be a misspelling of Ginkgo cranei, perhaps? In North America it had been classified by Brown 1962 as Ginkgo adiantoides until Zhou et al. 2012 reclassified it as Ginkgo cranei. However, Manchester 2014 has pointed out that Ginkgo wyomingensis Manum 1966 has priority. Hopefully, an upcoming publication will address the oversight in synonymy (pers. comm. Manchester 2021). text from Manchester 2014 Brown, R.W. 1962 Paleocene Flora of the Rocky Mountains and Great Plains. United States Geological Survey Professional Paper, 375:1-119 PDF LINK Manchester, S.R. 2014 Revisions to Roland Brown's North American Paleocene Flora. Sborník Národního Muzea v Praze - Řada B, 70(3-4):153-210 PDF LINK Manum, S.B. 1966 Ginkgo spitsbergensis n. sp. from the Paleocene of Spitsbergen and a Discussion of Certain Tertiary Species of Ginkgo from Europe and North America. Norsk Polarinstitutt Årbok, 1965:49-58 PDF LINK Zhou, Z., Quan, C., Liu, Y.S. 2012 Tertiary Ginkgo Ovulate Organs with Associated Leaves from North Dakota, USA, and their Evolutionary Significance. International Journal of Plant Sciences, 173(1):67-80 PDF LINK 4 Link to comment Share on other sites More sharing options...
paleoflor Posted February 22 Share Posted February 22 (edited) 2 hours ago, piranha said: In North America it had been classified by Brown 1962 as Ginkgo adiantoides until Zhou et al. 2012 reclassified it as Ginkgo cranei. However, Manchester 2014 has pointed out that Ginkgo wyomingensis Manum 1966 has priority. Hopefully, an upcoming publication will address the oversight in synonymy (pers. comm. Manchester 2021). text from Manchester 2014 Brown, R.W. 1962 Paleocene Flora of the Rocky Mountains and Great Plains. United States Geological Survey Professional Paper, 375:1-119 PDF LINK Manchester, S.R. 2014 Revisions to Roland Brown's North American Paleocene Flora. Sborník Národního Muzea v Praze - Řada B, 70(3-4):153-210 PDF LINK Manum, S.B. 1966 Ginkgo spitsbergensis n. sp. from the Paleocene of Spitsbergen and a Discussion of Certain Tertiary Species of Ginkgo from Europe and North America. Norsk Polarinstitutt Årbok, 1965:49-58 PDF LINK Zhou, Z., Quan, C., Liu, Y.S. 2012 Tertiary Ginkgo Ovulate Organs with Associated Leaves from North Dakota, USA, and their Evolutionary Significance. International Journal of Plant Sciences, 173(1):67-80 PDF LINK Interesting developments regarding the nomenclatural status of G. cranei, thanks for sharing! Nevertheless, I still expect the "G. crenei" you were trying to find information about is just a mispelling of this species name. Edited February 22 by paleoflor Searching for green in the dark grey. Link to comment Share on other sites More sharing options...
SPrice Posted February 22 Share Posted February 22 It kinda reminds me of this faux-sil Aspen leaf on GRF matrix. Link to comment Share on other sites More sharing options...
piranha Posted February 22 Share Posted February 22 1 hour ago, paleoflor said: I still expect the "G. crenei" you were trying to find information about is just a mispelling of this species name. I'm not sure who was looking for "G. crenei", but it wasn't me! Link to comment Share on other sites More sharing options...
paleoflor Posted February 23 Share Posted February 23 6 hours ago, piranha said: I'm not sure who was looking for "G. crenei", but it wasn't me! Sorry @oilshale was Searching for green in the dark grey. Link to comment Share on other sites More sharing options...
Wrangellian Posted February 23 Share Posted February 23 20 hours ago, FranzBernhard said: Well: Chrysanthemum stone - Wikipedia from VI? Franz Bernhard Nope... I'm surprised, I thought you would recognize it, and given how you spotted it I thought you did! Link to comment Share on other sites More sharing options...
FranzBernhard Posted February 23 Share Posted February 23 3 minutes ago, Wrangellian said: I'm surprised, I thought you would recognize it, and given how you spotted it I thought you did! No, sorry, not really an idea, just guesses: pinolite? Franz Bernhard Link to comment Share on other sites More sharing options...
Wrangellian Posted February 24 Share Posted February 24 On 2/23/2024 at 7:28 AM, FranzBernhard said: No, sorry, not really an idea, just guesses: pinolite? Franz Bernhard Yes! Apparently there are only 2 locations for that stuff in the world, one in your neighborhood and one up near Golden B.C. where this piece is from. I don't know if it's true there are only the two sources, but that's what I'm told. 1 Link to comment Share on other sites More sharing options...
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