Cretaceous tooth?

[Mart1980]

I found a tooth (?) of which it is completely unclear to me what it belonged to. 

 

Facts:

Geologic age or geologic formation: Nekum Limestone. The Nekum Limestone is part of the Formation of Maastricht and dates from the last part of the Cretaceous, the Maastrichtian.

State, province or region found: Sibbe Limestone Quarry, Netherlands.

 

Pictures:

 

 

 

 

 

Can anyone help me further?

[jikohr]

Interesting little find!

 

It reminds me of dermal denticles from rays and sawfish I've seen, especially with the ridges around the base.