FOR THE JURASSIC AGE LOVERS

4 knives with 4 differents Jurassic teeth, 

From top to bottom : 

 basilosaurus (middle eocene age, 39-25 millions years)

 spinosaurus (superior jurassic age, 100-97 millions years)

 mosasaurus (late cretaceous, 70-66 millions years)

 pappocetus (middle eocene age, 40-30 millions years)