How long did it take you to donate all fossils? I have three left but whenever I get them assessed, they're always ones I have -__- It's taking forever and its super tedious looking around for them everyday.
Here's a secret: when you dig up your fossils and before talking to Blathers, save your game. Keep talking to him and reset if he doesn't have the right fossils. It'll reset whatever fossil you'll get every time and before you know, you'll have all your fossils complete.