Your search for "Extraceratops SAST-EN031" revealed the following:
Extraceratops - SAST-EN031 - Common - 1st Edition from Savage Strike 1st Edition, available at 401 Games Canada. Rarity: Common Card Text:When a monster in the Extra Monster Zone is destroyed by battle with a monster in the Main Monster...
Extraceratops - SAST-EN031 - Common - Unlimited from Savage Strike Unlimited, available at 401 Games Canada. Rarity: Common Card Text:When a monster in the Extra Monster Zone is destroyed by battle with a monster in the Main Monster Zone and...