Complex sentence: Gemsbok are widely hunted in Africa for their spectactular horns that average in length, these horns are perfectly straight on males and extend from the base of the skull to a slight outward and rearward angle.
Split into simpler sentences: Gemsbok are widely hunted in Africa for their spectactular horns that average in length. In males, these horns are perfectly straight, extending from the base of the skull to a slight outward and rearward angle.