Extinct Monsters! Part IV

Another Marx/Papo comparison. This one is complicated. The Papo is an Apatosaurus. The Marx is a Brontosaurus. Same or different genus? Depends on whom you ask. A recent (2015) study argues strongly for different. You be the judge!

Marx got the length right but not the weight. Today's estimate is 17 tons - half of the 35 or more tons Marx has in its booklet. The largest suaropod genus known today is Argentinosaurus which is estimated to be between 100 and 130 feet and 55 to 100 tons.