The Largest Herbivorous Dinosaur: Argentinosaurus

The largest herbivorous dinosaur, and arguably the largest land animal ever, is generally considered to be Argentinosaurus huinculensis. This colossal sauropod roamed what is now Argentina during the Late Cretaceous period, approximately 97 to 94 million years ago.

While complete skeletons are rare, paleontologists have estimated its size based on massive fossilized vertebrae and limb bones. Argentinosaurus is believed to have measured between 30 to 40 meters (100 to 130 feet) in length and weighed an astonishing 60 to 100 tons (130,000 to 220,000 pounds). To put that into perspective, it would have been as long as three city buses and as heavy as a dozen adult elephants!

Determining the "largest" dinosaur is always challenging due to the incomplete nature of fossil records. However, Argentinosaurus consistently ranks at the top for sheer mass among known herbivores. Other notable contenders for the title of largest include Patagotitan mayorum, Puertasaurus reuili, and Dreadnoughtus schrani, all of which were also massive sauropods from South America.

Pro tip: When you see claims about the "largest" dinosaur, always consider whether it's referring to length, height, or mass. Often, different species hold records in different categories, and the most complete fossil discoveries tend to get the most accurate estimates.