this is a very detail subject but im asking simple question
We can see even toed ungulates Artiodactyla Odd-toed ungulates Perissodactyla diversity varies in continents and some please like Madagascar Australia and don't have any native. south america don't have any bovids native and bovid diversity is very low north america. Africa has no Tylopoda Cervidae only found on north tip. but very high bovid diversity.
Eurasia has both bovid Cervidae diversity.
Please describe what factors causes this uneven distribution