help on snail ID

[bluebill]

Can anyone give me a link or good website that shows the different types of marine snails commonly found in marine reef tanks. I found some type of snail (i think) on the bottom of a frag i got today. want to know what it is and if it is benefitial of not. I do not have a camara to take a picture thanks..

 

[saltym3]

liveaquaria should have you covered for common ones

 

[zx6r]

http://www.chucksaddiction.com/hitchhikers.html

 

[bluebill]

Thanks for the links guys, I am pretty sure it is a chiton snail...good or bad. It seemed like they are good, what are your experiences with them?