What was the largest reptile that lived on earth and is extinct now?

The largest reptile that lived on Earth and is now extinct is believed to be the Sarchosuchus, also known as "SuperCroc." This massive prehistoric crocodilian measured up to 40 feet long and weighed over 8 tons. It lived during the Late Cretaceous period, around 110 million years ago, and inhabited freshwater environments in Africa. Its enormous size and predatory capabilities made it one of the apex predators of its time.