Burstosaur
The Burstosaur (爆竜, Bakuryū?) are giant beasts from Dino Earth that evolved from the dinosaurs, they had a mutual friendship with the Dino People (竜人, Ryūjin?) until the Evorians attacked. While most of the Burstosaur eggs were sent to Earth, Tyranno, Tricera, and Ptera fell under the Evolien's control. Sent to Earth, the three went on a path of destruction until their partners freed them.
Read more about this topic: Abarangers