Arctodus pristinus inhabited more southerly areas , ranging from northern Texas to New Jersey in the east , Aguascalientes , Mexico to the southwest , and with large concentrations in Florida , the oldest from the Santa Fe River 1 site of Gilchrist County , Florida paleontological sites .
`` Arctodus pristinus '' lived in more southern areas from northern Texas to New Jersey in the east , Aguascalientes , Mexico to the southwest , and with large concentrations in Florida , the oldest from the Santa Fe River 1 site of Gilchrist County , Florida paleontological sites .