Any chance it's a mistake?
Maybe they didn't have forearms at all. Maybe someone made a mistake when digging up the fossil, assuming undigested bones from it's last meal belonged to T-Rex.
Space/Science » in reply to Why does T. Rex have vestigial forelegs?
Maybe they didn't have forearms at all. Maybe someone made a mistake when digging up the fossil, assuming undigested bones from it's last meal belonged to T-Rex.