Figured it'd be an interesting topic. What is your fossil white whale? That one piece you'd love to add to your collection but never have--either missed out, never seen it for sale or it's just far too expensive.
My two are a Baryonyx tooth (I spotted one for sale for a decent price during a spell when I wasn't collecting. I'm a fool for not buying it) and a dilophosaurus tooth. I think of the two, the Baryonyx is the more likely to obtain
Please share yours I'd love to see what other members are after.