Marine Reptiles Tooth?

[Napoleon North]

This is marine reptile tooth? Tooth near 9 mm

Age: Middle Jurassic

Yet it dissected specimen.

Edited July 21, 2015 by Napoleon North

[Rockwood]

If that's a barb I see I think it may be a saw fish rostral tooth. I came up with quite a few in a recent image search.

[Dave pom Allen]

it looks more like a shark tooth than a marine reptile

[Napoleon North]

Ok

[Carl]

Yep: I see a shark tooth, as well.

[Grimlock]

I agree, it definitely looks like a shark tooth.

[abyssunder]

In pic.1 the tooth looks a little a sawfish rostral spine because of the harpoon-like shape (barb),but the missing part of the tooth is hidden in the matrix, more visible in a close-up,in pic. 2.So,I incline to shark tooth also.