Eerie

Eeries (German Dino-Spuki) are ghosts that appeared in Super Mario World. They fly in straight or wobbly lines, and usually come in packs. They're in most of the Ghost Houses in Dinosaur Land and can only be defeated with invincibility. They are a species of an undead dinosaurs.

Eeries have a minor resemblance to Baby Yoshis as well as Spikes.