Okay this is a simple question, one that might not even require that much thought, but I just thought I'd run this by a few guys to see if it's actually possible.
Okay here's what I got - Since youkai like tsukumogami's can become living things (or at least become animated objects, but let's just use Kogasa's case as an example since we're in the ZUNverse) if they sit around for 100 years. I was thinking that other things could do the same, most likely fossils. Now I know that fossils usually date back for millions of years, but hear me out for a sec before you call this crazy.
Let's assume that there's a fossilized skeleton of a dinosaur sitting around somewhere in Gensokyo, would it be possible for the fossil itself to regain the original form of the dinosaur and thus become what is, essentially, a dinosaur youkai (or a Phantom Dinosaur) via the same method of a tsukumogami? I think there's a small chance that this might be possible, if you believe that spiritual energy could posses the fossils and give them life again.
Or maybe we could say that since people think Dinosaurs are exticnt they thus can appear in Gensokyo, much like how Rinnosuke said that things that are forgotten end up in Gensokyo or whatever (too lazy to check source, but I think that's the gist of it, feel free to correct me if I'm totally off base on this).
I dunno, it's probably silly for me to think of stuff like this, but it came up while I was writing and wanted to see what you guys thought or if you think it's actually possible.
