Monica Posted January 14, 2018 Share Posted January 14, 2018 Hi again! I was the lucky winner of Lot A in the Grand Christmas Auction, and it included four teeth from Morocco. I know pretty much nothing about dinosaurs and Morocco material, so I was hoping to get your input: Specimen #1: serrations are present Specimen #2: serrations are not present continued in next post... Link to comment Share on other sites More sharing options...
Monica Posted January 14, 2018 Author Share Posted January 14, 2018 Specimen #3: serrations are not present, and it seems to be worn down on one side Specimen #4: serrations are not present, and it seems to be worn down on both sides Thanks in advance for your help! Monica Link to comment Share on other sites More sharing options...
Troodon Posted January 14, 2018 Share Posted January 14, 2018 The first one looks like an Abelsaurid tooth (a theropod) and the second is a Spinosaurid tooth. The next group are Sauropod indet type teeth, that worn down portion at the tip is a wear facet. These come from the Kem Kem beds of Morocco 3 Link to comment Share on other sites More sharing options...
Runner64 Posted January 14, 2018 Share Posted January 14, 2018 Agree with Frank, the first one appears to be an Abelisaurid tooth. The second one is a Spinosaurid tooth. Either a Spinosaurus and there is also a second spinosaur, Sigilmassasaurus and I don't believe there is a way to distinguish them yet. Your last two are sauropod (long-neck dinosaur) teeth and one possibility is Rebbachisaurus but I'm not too knowledgeable about this. 1 Link to comment Share on other sites More sharing options...
LordTrilobite Posted January 14, 2018 Share Posted January 14, 2018 Yup, I agree with everything Troodon said. First does indeed look like an Abelisaurid tooth. It's a little hard to tell from the photo, but it seems like the tip might be a little fatter, which could indicate that the tooth is from a more forward position in the jaw. Here is an example of a premaxillary tooth of an Abelisaurid. Towards the back the teeth are more shaped like the top half of a D with a straight back edge. So that might give you a rough idea where the tooth might have sat in the jaw. That second tooth is indeed from a Spinosaurid. Unfortunately, right now there is no way to ID Spinosaurid teeth from Morocco at a genus level. It seems like Spinosaurus is present in the Kem Kem beds of Morocco, but so is Sigilmassasaurus. No complete skulls have been found and as such we don't know what the differences are between these animals in terms of teeth. And those pencil-like teeth are indeed from Sauropods. Runner64 said, one possible candidate would be Rebbachisaurus, but it seems there might be other Sauropods in the same region as well. And again no skull has been found. So Sauropoda indet. is about as accurate as an ID can get right now. The Kem Kem beds has deposits from the early Cenomanian, the first part of the Late Cretaceous. It had a really bizarre fauna, loads of huge fish, some the size of cars. Lots of crocodiles and turtles. Some Pterosaurs, a few Sauropod dinosaurs. But otherwise no herbivorous dinosaurs. But the deposits are dominated by Theropod remains, with some of the largest predators that ever lived, like Spinosaurus and Carcharodontosaurus. 1 Olof Moleman AKA Lord Trilobite Link to comment Share on other sites More sharing options...
-Andy- Posted January 15, 2018 Share Posted January 15, 2018 Specimen #1 - Abelisaur Specimen #2 - Spinosaur Specimen #3 - Sauropod (sold as Rebbachisaurus) Specimen #4 - Sauropod (sold as Rebbachisaurus) 1 Looking forward to meeting my fellow Singaporean collectors! Do PM me if you are a Singaporean, or an overseas fossil-collector coming here for a holiday! Link to comment Share on other sites More sharing options...
Tidgy's Dad Posted January 15, 2018 Share Posted January 15, 2018 Agree with the others! Nice teeth from Santa! 1 Life's Good! Tortoise Friend. Link to comment Share on other sites More sharing options...
oldtimer Posted January 15, 2018 Share Posted January 15, 2018 Thanks for asking for some ID on these. I took it as a quiz. Got them right. And I learned something too about the wear facets. Thanks to @Troodon. 1 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