“Slender-legged, fast-running, herbivorous mammals became common – in the past you could amble or leap off and hide, but you can’t hide in the open grasslands,” Holtz says. This is when, in our history, we started to see a burst in the diversity of hoofed, grazing animals and the carnivores that preyed upon them.



อ่านต่อได้ที่  : โรงเรียนบ้านสันดอน

สาระน่ารู้  :  Prolactin