The Halloween Dino Trip: The Mystery Adventures of Jillian Waylan

Jillian is planning her first big Halloween party and hopes the weather holds out.
Well, the weather does...but after Jillian, in her witch's outfit playfully chants the following from a prop witch's spell book:

"Changes are due...
Not many but a few
To meet your history
And see it's not misery
Ghosts will abound
Trekking all around
For you will now travel
In a land full of marvel"

everyone is in for the surprise of their life. Her backyard is gone. In its place greenery filled with tall trees, a variety of bushes, and... DINOSAURS?