What is the biggest Dinosaur/Reptile tooth you own?

[JorisVV]

I was wondering what all your biggest Dinosaur or (marine) reptile teeth look like. As they can vary in size, weight and shape so much. 

 

The biggest Dinosaur tooth I own myself is a fully rooted and non restored Spinosaurus Sp. tooth measuring just over 16 centimeters in length! 

[Kikokuryu]

I guess this, possibly Jurassic (?) theropod crown just shy of 4 inches from the red/pink site in the Figuig Province of Morocco. Age is kind of ambiguous, supposedly from the same layer that produces turiasaurian sauropod teeth. But I do know it's not from the "black site" in Talsint or what we often call the Dekkar Group, nor from Boulemane (El Mers). A big mystery theropod tooth, but the apex predator of whatever time period and formation it lived in. Unfortunately, the mesial side of the tooth is cleaved clean off.

Technically some rooted teeth I have might be a bit bigger.

 

Honorable mention is this 3.2 inch carcharodontosaurian from the Grès supérieurs Formation in Laos. Probably not cf. Siamraptor given the size. It's not the biggest tooth, but quite large for the deposit.

[Brevicollis]

@Kikokuryu, @JorisVV Wow, those teeth are just breathtaking 

Im kinda afraid to post here, knowing I dont have a tooth this big and rare, but I'll do it anyway.

 

Carcharodontosauridae indet. maxilary tooth, from the Kem Kem beds, Morocco.

Its measuring 9 cm from the prosterior side of the base, all the way to the very tip.

[Bobby Rico]

 I don't really have anything spectacular but i am happy to bumb this thread. 

 

Ceratopsian indet.  could be triceratops 3.5cm Garfield County, MT. The T.rex tooth 6 cms 

[North]

No rarities, but my biggest dino tooth would be 10.5cm KemKem Carcharodontosaurid.

 

From marine reptiles, 7cm Moroccan Hainosaurus.