The shrub-ox (Euceratherium collinum) is an extinct genus and species of ovibovine caprine native to North America along with Bootherium (Bootherium bombifrons) and Soergel's ox (Soergelia mayfieldi).
Set during the days of the Pleistocene Ice Age of North America Megafauna the film centers around three main Manny the Woolly Mammoth Sid the Nothrotheriops and Diego the Smilodon Fatalis
