u/Altruistic-Fig7100

I have the following items in my inventory:

1 Shadowbeast Horn
1 Prime Troll Tusk
2 Teeth of a Swampshark Mother
3 Prime Tongues of Fire

But my hero still tells Tarrok that he doesn't have everything needed to make the Ulu-Mulu.

I read somewhere that I need a "normal" Tongue of Fire (from a small Fire Lizard) and not the prime one. The problem is that there are no small Fire Lizards left on my map (I have looked everywhere), as I killed them many hours ago (and they are not respawning). However someone else said that the Prime Tongue of Fire should work as well, so I'm really confused.

I'm starting to get really desperate because I've spent so many hours trying to solve this.