Alopias exigua tooth?

[Hastalis]

Hello, this is my very first find of thresher shark tooth over here in southern Slovakia (Lučenec region). 

Age: early Miocene/Eggenburgian (Central Paratethys).

I have made some pictures from different angles to make the identification easier. 

It looks like Alopias exigua tooth to me., but since this is my first thresher shark I have some doubts...

Have compared it to the extant Alopias superciliosus too (looks very similar), but this species appeared later in Middle Miocene, so I have exluded this option... 

If it is the Alopias exigua, I can add the first thresher shark species to my collection.

Thank you in advance for your help.