RIght. I'm not sure there are even any subcompact cars which weigh less than a ton. "Half-ton" has something to do with cargo capacity, I think.
capacity--right. My 3/4 ton, for example, actually weighs 4,375 lbs.
This creature was 20 feet long and probably like most triceratops had a massive body. I think a grizzly bear which reaches up to 8 feet probably weighs 1/2 ton. Either a typo, or a useless comparison to the capacity of a pickup truck. There was another article about a Nodosaur recently found that weighed 3,000 lb. when alive, and nowhere near 20 ft. long.