Dinosaur egg

The Dinosaur Egg is a stand-alone fossil that can be donated to the museum in all games to date.

Donating Dinosaur Egg in Wild World
"Utterly amazing, this is! What a perfect specimen! Figuring out what kind of egg this is might seem easy, but it's actually not. In fact, I must admit that I have no idea how to go about it, eh wot? Still, that very mystery is what's so fascinating about a dinosaur egg! Ah! Hoo. I'm awfully sorry. Inexplicable mysteries tend to set my beak blabbing."

Donating Dinosaur Egg in City Folk
"Hoo, I say! Hoo upon hoo! A fossilized egg! Eggcellent! I must apologize for that atrocious pun. So sorry. I just got carried away in my eggcitement, eh wot? Because this is a grade-A specimen. Hoo hoo hoo! Now, I hate to admit this, but I cannot identify the species of dinosaur that produced this particular egg. I can envision its hatching, though, and from the shards, a new life slowly emerging, a miracle of flesh and bone! Hoo, the wonder of it all! The drama. The spectacle! The ebb and flow! The grass and grit! Life, I say! Life! Hoo, mercy! Hoomy, indeed! I must apologize profusely. I...I was lost in the moment. My beak flaps on its own!"