Columbian mammoth
The show's episodes offer several common themes, the main one being the coming of humans to America via the Ice Age's land bridge and causing the extinction of the North American megafauna featured in the episodes. Another BBC programme, "Monsters We Met" picks up and elaborates on this topic in greater detail. A more recent Discovery show, "Prehistoric (2009/10 show)", also features scenic elements of "Prehistoric America", such as the present melting away to reveal the future, as well as creatures already shown by the show, like the American mastodon, "Arctodus" and Columbian mammoth.