Pterygotus Posted February 25, 2019 Share Posted February 25, 2019 How do these fossils look? Descriptions have been screenshotted. Link to comment Share on other sites More sharing options...
ReptileTooth Posted February 25, 2019 Share Posted February 25, 2019 For the spinosaurus jaw: spinosaurus-jaw 2 "The baneful Dragons, O Seas, are gone: Fiends, 0 Earth, have filled thee with the bones of Defeat and Death." Link to comment Share on other sites More sharing options...
JohnJ Posted February 25, 2019 Share Posted February 25, 2019 @Pterygotus Please remember the guidelines of the Forum do not allow 'copy & paste' or screenshots of ad copy (sales text). Thanks. 3 The human mind has the ability to believe anything is true. - JJ Link to comment Share on other sites More sharing options...
Troodon Posted February 25, 2019 Share Posted February 25, 2019 My thoughts in these fossils: Sail: I have a complete neural spine "sail" and both sides are smooth there are no ridges in the center or edge. Also the ones in Stromers plate (photo) are smooth. Not sure what tell you. Siamosaurus tooth: it's common to have gold leaf placed on a fossil. In fact the Siamosaurus tooth being sold at the Tucson show had one and so does one in my collection. What concerns me is the shape of the tooth it's bulbus not long and circular. It's different than the ones in my collection, the holotypes (see photo) or others I've seen. However there are features like the heavy ribbing that is consistent with the holotypes. It could be one of the larger Anterior teeth but nothing is published. Buffetaut describes the teeth having cross sections ranging from ovular to near circular. Marked ribbing is displayed on both the labial and lingual faces, with roughly 15 ribs per side. The mesial and distal carinae were reported to lack serrations. Unfortunately there are just not that many to compare against and make a good assessment but it may be one. I'm not sure. (See my update in reply posted below) Jaw: See link that Reptile Tooth added above. 3 Link to comment Share on other sites More sharing options...
JohnBrian Posted February 26, 2019 Share Posted February 26, 2019 1 hour ago, Troodon said: Siamosaurus tooth: it's common to have gold leaf placed on fossil. In fact the Siamosaurus tooth being sold at the Tucson show had one and so does one in my collection. Why? 1 ---------------------------------------------------------------------------- John I had a friend once, but the wheels fell off. Sad, very sad. - Nightwing Link to comment Share on other sites More sharing options...
DeepTimeIsotopes Posted February 26, 2019 Share Posted February 26, 2019 17 minutes ago, JohnBrian said: Why? I have the same question. Each dot is 50,000,000 years: Hadean............Archean..............................Proterozoic.......................................Phanerozoic........... Paleo......Meso....Ceno.. Ꞓ.OSD.C.P.Tr.J.K..Pg.NgQ< You are here Doesn't time just fly by? Link to comment Share on other sites More sharing options...
Troodon Posted February 26, 2019 Share Posted February 26, 2019 11 minutes ago, JohnBrian said: Why? The comments by Pterygotus were removed. They are put on there by Buddist Monks as a sign of reverence that it's a treasured item. 6 Link to comment Share on other sites More sharing options...
LordTrilobite Posted February 26, 2019 Share Posted February 26, 2019 I'm not sure what that flat ridged bone is but those scratch marks sure are interesting. Looks like possible bite marks. 1 Olof Moleman AKA Lord Trilobite Link to comment Share on other sites More sharing options...
Troodon Posted February 26, 2019 Share Posted February 26, 2019 I slept on that Siamosaurus tooth and feel more comfortable that it's as described. Not much else it can be with that ribbing. It may be an unerupted tooth that is not fully formed why the shape. 1 Link to comment Share on other sites More sharing options...
Pterygotus Posted February 26, 2019 Author Share Posted February 26, 2019 10 hours ago, LordTrilobite said: I'm not sure what that flat ridged bone is but those scratch marks sure are interesting. Looks like possible bite marks. The description said they were bite marks. Link to comment Share on other sites More sharing options...
LordTrilobite Posted February 26, 2019 Share Posted February 26, 2019 5 minutes ago, Pterygotus said: The description said they were bite marks. Yeah I'd feel comfortable with that description. 1 Olof Moleman AKA Lord Trilobite Link to comment Share on other sites More sharing options...
Pterygotus Posted February 26, 2019 Author Share Posted February 26, 2019 3 hours ago, Troodon said: I slept on that Siamosaurus tooth and feel more comfortable that it's as described. Not much else it can be with that ribbing. It may be an unerupted tooth that is not fully formed why the shape. How rare are siamosaurus suteethorni and is the species a spinosaurid? Also is your spinosaurus neural arch complete and could i see a picture of it? Weren’t the only spinosaurus neural arches destroyed in the bombing? Link to comment Share on other sites More sharing options...
Troodon Posted February 26, 2019 Share Posted February 26, 2019 13 minutes ago, Pterygotus said: How rare are siamosaurus suteethorni and is the species a spinosaurid? Also is your spinosaurus neural arch complete and could i see a picture of it? Weren’t the only spinosaurus neural arches destroyed in the bombing? Very rare because after their export ban in the early 2000 no more came out of the country. All the teeth you see, my guess, were obtained in the late 90's from the same individual in Thailand. They were then sold on e-bay. Like I said above little has been published on this species so have to believe little is known about this Spinosaurid. You sometimes see partial spines at Tucson show Here is my spine it's basically complete no resto on it 3 feet tall almost 1 meter. 5 Link to comment Share on other sites More sharing options...
Pterygotus Posted February 26, 2019 Author Share Posted February 26, 2019 56 minutes ago, Troodon said: Very rare because after their export ban in the early 2000 no more came out of the country. All the teeth you see, my guess, were obtained in the late 90's from the same individual in Thailand. They were then sold on e-bay. Like I said above little has been published on this species so have to believe little is known about this Spinosaurid. You sometimes see partial spines at Tucson show Here is my spine it's basically complete no resto on it 3 feet tall almost 1 meter. Are partial spines with predation still rare? Link to comment Share on other sites More sharing options...
Pterygotus Posted February 26, 2019 Author Share Posted February 26, 2019 1 hour ago, Troodon said: Very rare because after their export ban in the early 2000 no more came out of the country. All the teeth you see, my guess, were obtained in the late 90's from the same individual in Thailand. They were then sold on e-bay. Like I said above little has been published on this species so have to believe little is known about this Spinosaurid. You sometimes see partial spines at Tucson show Here is my spine it's basically complete no resto on it 3 feet tall almost 1 meter. I saw the fossil itself of siamosaurus rare or is it just because the export is banned? Link to comment Share on other sites More sharing options...
Troodon Posted February 26, 2019 Share Posted February 26, 2019 Just now, Pterygotus said: I saw the fossil itself of siamosaurus rare or is it just because the export is banned? I think both for collectors. 25 minutes ago, Pterygotus said: Are partial spines with predation still rare? Of course but I don't think the one you show is one, that center rib is very odd. Do you have a photo of a spine with a rib down the center? 2 Link to comment Share on other sites More sharing options...
Pterygotus Posted February 26, 2019 Author Share Posted February 26, 2019 1 minute ago, Troodon said: I think both for collectors. Of course but I don't think the one you show is one, that center rib is very odd. Do you have a photo of a spine with a rib down the center? By spine with a rib down the center what do you mean? Link to comment Share on other sites More sharing options...
gigantoraptor Posted February 26, 2019 Share Posted February 26, 2019 @Troodoncouldn't the 'sail' part actually be part of an Onchopristis numidus rostrum (giant sawfish)? 1 Link to comment Share on other sites More sharing options...
Anomotodon Posted February 26, 2019 Share Posted February 26, 2019 Saw this siamosaurus tooth in Tucson, it is very nice and is fairly fat. However, as Frank already pointed out, such heavy ribbing combined with present carinae is atypical for Crocodyliformes, so I think it actually is a Siamosaurus. @gigantoraptor texture doesn't really match cartilage and it looks like it is porous, basal view picture will help the ID. Although with such small piece I don't know if it is actually a Spinosaurid neural spine and not Carcharodontosaurid or sauropod? 1 The Tooth Fairy Link to comment Share on other sites More sharing options...
Troodon Posted February 26, 2019 Share Posted February 26, 2019 1 hour ago, Pterygotus said: By spine with a rib down the center what do you mean? These are the features that are raising questions and unknown in origin. I cannot recall any dinosaurian spine with this center feature but this is the Kem Kem anything is possible 1 Link to comment Share on other sites More sharing options...
Troodon Posted February 26, 2019 Share Posted February 26, 2019 49 minutes ago, gigantoraptor said: @Troodoncouldn't the 'sail' part actually be part of an Onchopristis numidus rostrum (giant sawfish)? Agree with Anomotodon. I think a photo of both end might help like he suggested 1 Link to comment Share on other sites More sharing options...
Pterygotus Posted February 27, 2019 Author Share Posted February 27, 2019 10 hours ago, Troodon said: Agree with Anomotodon. I think a photo of both end might help like he suggested The seller did not put any pictures of the end on. This is the best I could get out of a photo Link to comment Share on other sites More sharing options...
Troodon Posted February 27, 2019 Share Posted February 27, 2019 Sorry thats not helpful cannot make much out 1 Link to comment Share on other sites More sharing options...
Pterygotus Posted February 27, 2019 Author Share Posted February 27, 2019 9 hours ago, Troodon said: Sorry thats not helpful cannot make much out What Is it most likely? Link to comment Share on other sites More sharing options...
Haravex Posted February 28, 2019 Share Posted February 28, 2019 this might help I no longer have it but with everything I photograph it, LT helped me with the identification saying it was a nerural spine 3 Link to comment Share on other sites More sharing options...
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