Does anyone know what a “kauda” shell is called in English?

And what is the significance of such shell, or what is it used for? Is there any historical significance to it?

I am doing a small research and I need some help, at least to find out what it is called.

Bah re bah .. Kauda lai ke bhanchha nai thaya napaye ke ko thesis lekhnu ni yer .....................................gajab chha yer .. !

I have seen such shell in Nepal and have witnesses people using it to gamble.
I am doing a small research, or just gathering information relating to such shell. And to do that, I would first need to know what it is called. So I am seeking your help here.

gham pani gham pani shal ko bihe sorry shell ko bihe ... lol ... research gardai garnuhos .. !

.its called a sea-shell :P

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on a more serious note, try looking under 'conch shells'. i know your typical idea of a conch shell is them massive things that you can use as a 'musical' instrument, but i do believe that the shape of the कौडा is conch