Hmm...was playing a flash game involving dinosaurs and extinction and got the idea for a fic taking place WAY in the future, at the K-T event. (Bear with me, it's not what you think. Most of this is based off the game events.)
Basically, at this point in time, countless land shifts have made the world a very different place. Spiketails are gone, Longnecks are rare, and new strange species have sprung up everywhere. The Great Valley itself was ruined in an earthshake that split the land in two, raised some of the land. and destroyed part of the protective wall surrounding it. However, parts remained safe, and colonies still live in these mini-valleys. The eastern lands have become smaller, as big water encroaches, and the parts no longer covered have become fertile again.
(Right, that's out of the way, now for the storyline) We follow several different characters (A loner, a whole herd, someone living in one of the valley remnants, and someone out east; the main character). Basically, what starts out as a calm and simple day is interrupted by a large rock falling from the sky, which crashes to the south, with an explosion that is so bright it almost hides the sun. Many background characters perish, but the main character flees and makes it to a cavern in the western mountains, where several other herds have survived; courtesy of an underground spring and some food.
And there I ran out of ideas. Having them all perish would be a downer, but it's not like they would all survive. Unless they did, but underground, and ultimately dying out. Or, returning to the land, but not to breed.
Or, to be even more bizarre, end with the exact same Rainbowfaces from 7 returning, noting how bad the situation is, and offering to save them (Said in a strange way). They then beam them in a light, to a strange cold place, then beamed again, to what appears to be the lands before the falling rock. Thus, the dinosaur race flourishes, unknowing that the earth is no longer ruled by them. The rainbowfaces survey their work, and then leave a "Animal Reserve" Beacon near the planet, as well as a surveying sattelite.
Any thoughts? A bit too sci-fi for LBT, methinks, but I still like where this could go.