The Jeffersonian Mammoth (Mammuthus jeffersonii) is a North American species of mammoth. It lived alongside the Columbian Mammoth (Mammuthus columbi) and the Imperial Mammoth (Mammuthus imperator). World map showing North America A satellite composite image of North America. ... Species Mammuthus africanavus African mammoth Mammuthus columbi Columbian mammoth Mammuthus exilis Pygmy mammoth Mammuthus jeffersonii Jeffersonian mammoth Mammuthus trogontherii Steppe mammoth Mammuthus meridionalis Mammuthus subplanifrons South African mammoth Mammuthus primigenius Woolly mammoth Mammuthus lamarmorae Sardinian Dwarf Mammoth A mammoth is any of a number of an extinct genus of proboscidean... Binomial name Mammuthus columbi The Columbian Mammoth (Mammuthus columbi) is an extinct species of elephant that inhabited North America between 100,000 and 9,000 years ago. ...