Pentazole Posted March 28, 2020 Share Posted March 28, 2020 (edited) Hi, please stare at this trilobite that I just snagged and tell me if you would agree with me that it's real, or if you think it's fake. If the latter, I would appreciate your reasons. Edit: pictures posted properly. Also I ask because I'm still very new at collecting. Edited March 28, 2020 by Pentazole Upload images properly 1 Link to comment Share on other sites More sharing options...
Kane Posted March 28, 2020 Share Posted March 28, 2020 If you could post it here, that would be great. I make it a habit not to download files from people I don't yet know. 1 ...How to Philosophize with a Hammer Link to comment Share on other sites More sharing options...
Huntonia Posted March 28, 2020 Share Posted March 28, 2020 I would recommend you upload your files directly to the forum, it makes things much simpler. Looking at the photos it is definitely authentic. Hard to tell of their is any restoration, on a specimen this nice I would imagine there is at least some. I don't think it's a Kayserops megaspina however. The spines are way too short, it may be a different species of Kayserops. Link to comment Share on other sites More sharing options...
caldigger Posted March 28, 2020 Share Posted March 28, 2020 I can't even open the files, it just gives an error message. Link to comment Share on other sites More sharing options...
Pentazole Posted March 28, 2020 Author Share Posted March 28, 2020 18 minutes ago, Kane said: If you could post it here, that would be great. I make it a habit not to download files from people I don't yet know. Sorry, fixed. Link to comment Share on other sites More sharing options...
Tidgy's Dad Posted March 28, 2020 Share Posted March 28, 2020 Hello, and a very warm welcome to TFF from Morocco. I think Kayserops is correct, but not sure about the species. 1 Life's Good! Tortoise Friend. Link to comment Share on other sites More sharing options...
Pentazole Posted March 28, 2020 Author Share Posted March 28, 2020 (edited) 43 minutes ago, Huntonia said: I would recommend you upload your files directly to the forum, it makes things much simpler. Looking at the photos it is definitely authentic. Hard to tell of their is any restoration, on a specimen this nice I would imagine there is at least some. I don't think it's a Kayserops megaspina however. The spines are way too short, it may be a different species of Kayserops. Sorry researching as we speak. Metacanthina issoumourensis? Edited March 28, 2020 by Pentazole Clarification Link to comment Share on other sites More sharing options...
Fossildude19 Posted March 28, 2020 Share Posted March 28, 2020 Looks real, and nicely prepped! I see a little bit of restoration to the tips of the genal spines. 4 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...
Pentazole Posted March 29, 2020 Author Share Posted March 29, 2020 On 3/28/2020 at 5:31 AM, Fossildude19 said: Looks real, and nicely prepped! I see a little bit of restoration to the tips of the genal spines. Thank you fossildude for the observation, I will keep your comments in mind. 1 Link to comment Share on other sites More sharing options...
aplomado Posted April 3, 2020 Share Posted April 3, 2020 That is gorgeous! I love the stripe through it! Link to comment Share on other sites More sharing options...
Malcolmt Posted April 3, 2020 Share Posted April 3, 2020 Nice little bug ... definitely real with very minor restoration Link to comment Share on other sites More sharing options...
Pentazole Posted April 14, 2020 Author Share Posted April 14, 2020 On 4/3/2020 at 6:45 PM, aplomado said: That is gorgeous! I love the stripe through it! The seller claims that this was a natural crack in the rock, that was cemented over time with minerals, which makes it even more interesting. However, I do not know enough about how these specimens are extracted to be able to tell if this was cut with a saw, or natural fracture. To be honest even though it cost me more due to the seller's story, deep inside I am 95% convinced it's human error and this specimen was slabbed with a saw. Would anyone care to shed some light on that? Link to comment Share on other sites More sharing options...
FranzBernhard Posted April 14, 2020 Share Posted April 14, 2020 14 minutes ago, Pentazole said: if this was cut with a saw, or natural fracture. This kind of trilos is located in very hard limestone. Limestone is smashed into pieces. Whenever cross sections of trilos are found, the pieces are glued back together (or after some further prep). Then air scribe comes to work (mini pneumatic chissel). Later mini sand blasting with soft media. And at the end some restoration, if necessary. Many dozens of hours went into such a specimen. These could not be cheap. Concerning the brown, mineral filled crack, it appears natural to me. There is only a very slim chance, that this is a filled-up saw cut. How does the crack look like in detail? Is it completely straight? How does its filling look like? Franz Bernhard 3 Link to comment Share on other sites More sharing options...
Huntonia Posted April 14, 2020 Share Posted April 14, 2020 44 minutes ago, Pentazole said: To be honest even though it cost me more due to the seller's story, deep inside I am 95% convinced it's human error and this specimen was slabbed with a saw. Would anyone care to shed some light on that? Like @FranzBernhard said a closer look could tell the difference, if you could post a close up photo that would help. I believe however that this is a calcite seam, a natural and very beautiful occurence in fossils and rocks in general. If it is calcite it should be crystal like in appearance and may glow under UV light and/or have refractive properties. 1 Link to comment Share on other sites More sharing options...
Pentazole Posted April 15, 2020 Author Share Posted April 15, 2020 On 4/14/2020 at 11:50 AM, Huntonia said: Like @FranzBernhard said a closer look could tell the difference, if you could post a close up photo that would help. I believe however that this is a calcite seam, a natural and very beautiful occurence in fossils and rocks in general. If it is calcite it should be crystal like in appearance and may glow under UV light and/or have refractive properties. I guess we will have to continue this discussion at a much later time. I have not seen this yet, it is being stored in the US until my brother comes to visit me where I live (which was supposed to be now had COVID 19 not happened). Thank you for all the insight, though. I feel super amateurish. 1 Link to comment Share on other sites More sharing options...
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