Dinosaurs were the largest land animals that have ever lived. The biggest of them all was Argentinosaurus huinculensis, which weighed an estimated 100,000 kilograms (220,000 pounds) and measured 39.7 meters (130 feet) long. But how large could dinosaurs really get?

A new study published in the journal Current Biology suggests that dinosaurs may have been able to grow even larger than Argentinosaurus. The study's authors, led by paleontologist Gregory S. Paul, used a computer model to simulate the growth of different dinosaur species. They found that some species, such as the titanosaur Puertasaurus reuili, could have reached weights of up to 200,000 kilograms (440,000 pounds).

The study's findings suggest that dinosaurs were capable of achieving truly enormous sizes. This is likely due to a combination of factors, including their warm-blooded metabolism, their efficient respiratory systems, and their long lifespans.

The study's authors also found that dinosaurs may have reached their maximum size during the Cretaceous period, which lasted from about 145 million years ago to 66 million years ago. This was a time of great environmental change, including the rise of flowering plants and the spread of grasslands. These changes may have favored the evolution of larger dinosaurs, as they provided more food and resources.

The study's findings provide new insights into the evolution of dinosaurs. They also suggest that dinosaurs may have been even more impressive creatures than we previously thought.