Well, I turned on my game for the first time in a year! I was terrified to visit my town because what if one of my beloved villagers moved? As it turns out, only one villager - who I didn't particularly care for - moved. :D
I dug up fossils and approximately 23425 'oids. Thankfully Beautiful...
You must have the wrong dinosaur, then, yes. If he won't take it you already have it - or if your gate is open. Be sure your gate is closed before visiting him!
It's okay - I'll take all three fossils back. Opening my gate when you give me the go ahead.
Erm ... the fossil should still be the same, though. Basically all the transactions I've done are for museums. My siblings and I also trade fossils based on who needs what. Something's funky.
I'll open my gate in a moment. :)