Is the biggest known dinosaur larger than a large blue whale?

Argentinosaurus—often cited as the largest known sauropod—is known from little more than a few vertebrae, ribs, and leg bones. Likewise, the biggest Diplodocus is a ... A 100-foot-long blue whale can weigh 150 tons or more, three times heavier than a dinosaur of the same size. Advertisement. read more

‘Balaenoptera’ sibbaldina, an extinct whale, was probably slightly larger than the average blue whale (27 m vs. 24 m - not a big difference, especially because the blue whale might reach 33 m). “Hector’s ichthyosaur”, a marine reptile discovered in New Zealand in 1874. read more

Best Answer: The fact that land animals are subject to much narrower limitations than sea animals, size-and-weight-wise, to me means that the largest whale MUST have been bigger than the largest dinosaur. The longest blue whale ever measured was a female who was 33.65 (110 feet) meters long, and that was in modern times. read more