jikohr Posted November 24, 2022 Share Posted November 24, 2022 (edited) Hi everyone! I'm actually fairly certain this is Spinosaur based on the S. aegyptiacus holotype drawing which shows a vertebra with a bump of bone on the bottom and nothing on the sides of the centrums (I cropped that part for a reference) but Kem Kem stuff is weird so I figured it would be a good idea to get a second opinion. The bone measures 10.1 cm tall without the bump of matrix on top, 5.4 cm long, and the centrum widths are 5.15 and 6.15 cm. Any insight is greatly appreciated as always! Also Happy Thanksgiving! Edited November 24, 2022 by jikohr Link to comment Share on other sites More sharing options...
DatFossilBoy Posted November 24, 2022 Share Posted November 24, 2022 This indeed does look like a spino vertebra to me. Maybe @Troodon or @LordTrilobite can confirm? Regards Link to comment Share on other sites More sharing options...
LordTrilobite Posted November 24, 2022 Share Posted November 24, 2022 Oh that's interesting. It seems to match very well with the drawing of the holotype caudal vertebra. But what's interesting, is that I have not seen any caudal vertebra with that ventral process from Kem Kem yet. All other spinosaur vertebrae from the Kem Kem lack this (that I've seen). So I wonder if this might be the first caudal. Or perhaps it's a different species than the other Kem Kem spinosaurs. But I will say that I think it needs more cleaning to put a more confident ID on it. Olof Moleman AKA Lord Trilobite Link to comment Share on other sites More sharing options...
Troodon Posted November 24, 2022 Share Posted November 24, 2022 Here is the anterior caudal series of Spinosaurus. Is that extension on the ventral side all bone? Link to comment Share on other sites More sharing options...
jikohr Posted November 24, 2022 Author Share Posted November 24, 2022 4 hours ago, LordTrilobite said: Oh that's interesting. It seems to match very well with the drawing of the holotype caudal vertebra. But what's interesting, is that I have not seen any caudal vertebra with that ventral process from Kem Kem yet. All other spinosaur vertebrae from the Kem Kem lack this (that I've seen). So I wonder if this might be the first caudal. Or perhaps it's a different species than the other Kem Kem spinosaurs. But I will say that I think it needs more cleaning to put a more confident ID on it. 2 hours ago, Troodon said: Here is the anterior caudal series of Spinosaurus. Is that extension on the ventral side all bone? Just a thought based on that but since the ventral process was documented on the aegyptiacus holotype, could it be exclusive to that species? Also it looks like the vertebra numbered 3 in Troodon's picture has it as well. Link to comment Share on other sites More sharing options...
Troodon Posted November 24, 2022 Share Posted November 24, 2022 Yes C3 is a candidate, just want to make sure it was bone not matrix Link to comment Share on other sites More sharing options...
LordTrilobite Posted November 24, 2022 Share Posted November 24, 2022 Hm, I guess that ventral process seems to be present on the "neotype" as well. Hadn't noticed that before. Olof Moleman AKA Lord Trilobite Link to comment Share on other sites More sharing options...
jikohr Posted November 30, 2022 Author Share Posted November 30, 2022 On 11/24/2022 at 4:25 PM, Troodon said: Yes C3 is a candidate, just want to make sure it was bone not matrix On 11/24/2022 at 6:27 PM, LordTrilobite said: Hm, I guess that ventral process seems to be present on the "neotype" as well. Hadn't noticed that before. I took a bunch more close ups. Do these help with the ID at all? Link to comment Share on other sites More sharing options...
Troodon Posted November 30, 2022 Share Posted November 30, 2022 That extension is weird but very real and distinctive. I would say CA3 of a Spinosaurid. Nice unique item. Link to comment Share on other sites More sharing options...
jikohr Posted November 30, 2022 Author Share Posted November 30, 2022 7 hours ago, Troodon said: That extension is weird but very real and distinctive. I would say CA3 of a Spinosaurid. Nice unique item. Thanks! Finally one of these that isn't croc. Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now