Plesiosaur Teeth

[RickNC]

Hi. Wondering if those of you with knowledge on plesiosaur teeth could take a look at this group of teeth. These are from a local river and are Cretaceous in age. I believe most of them are crocodilian but a few seem to be different. The laterally compressed teeth may be fish teeth. I can take more pictures of individual teeth of interest. Thanks.

Edited August 20, 2015 by RickNC

[izak_]

As far as I know, the ones with the grooves are plesiosaur teeth. Also, they are long and bent... They are designed for catching fish so having curved teeth can help.

They are very cool finds! As far as I can tell most of them are plesiosaur teeth. I don't think in the first picture down the very bottom left is crocodilian. Down count on these proposals, though. I am going off very limited knowledge.

Thanks,

Izak

[creto]

As far as I know Plesiosaur teeth do not have grooves. They do however have fine striations from gum to tip. I am not convinced that any are Plesiosaur.

Edited August 20, 2015 by creto

[TNCollector]

I don't see Plesiosaur either. There are 3 that "could" be (items 11 and 13 counting left to right from top picture), but I am not sure. Plesisosaur teeth can have very thin grooves, but more noticeable are the striations creto mentioned. I see a lot of crocodilian teeth, and even one possible encodes fang.

[Mike from North Queensland]

I can not tell by photos but it may help to eliminate the definite crocodile by comparing the profiles to know species from the area. Are any of the plesiosaur teeth know to delaminate ? Are the known plesiosaur teeth from the formation fairly robust or gracile?

Mike D

[RickNC]

I can not tell by photos but it may help to eliminate the definite crocodile by comparing the profiles to know species from the area. Are any of the plesiosaur teeth know to delaminate ? Are the known plesiosaur teeth from the formation fairly robust or gracile?

Mike D

No idea Mike. Plesiosaur remains are uncommon here but I've found two confirmed vertebrae at this site.