Brontosaurus
"Brontosaurus" was a large, long-necked quadrupedal animal with a long, whip-like tail, and forelimbs that were slightly shorter than its hindlimbs. The largest species, "B. excelsus", weighed up to and measured up to long from head to tail. For comparison, the current largest land animal, the average male African bush elephant is 3.20 m (10.5 ft) tall at the shoulder and has a body mass of 6,000 kg (13,228 lb) or 6.6 short tons.
Coronosaurus
"Coronosaurus" is a medium-sized centrosaurine ceratopsid. Gregory S. Paul in 2010 estimated its body length at five meters, its weight at two tonnes. It had as an adult inflated supraorbital horncores — the "brow horns" above the eye sockets — but not elongated as in "Zuniceratops", chasmosaurines, and more basal centrosaurines (like "Albertaceratops" and "Diabloceratops"), that project laterally (to the sides) over the orbit. As a sub-adult its postorbital horncores are pyramidal in shape with a slight lateral inflection of the distal, upper, one half.