Snakes come in all sizes today, from tiny thread snakes no longer than a pencil to green anacondas that rival small cars in length. You already know the anaconda as one of nature’s heavyweights.

A University of Cambridge-led team has analyzed giant anaconda fossils from South America to deduce that these tropical snakes reached their maximum size 12.4 million years ago and have remained ...

During the Middle to Upper Miocene period (12.4 to 5.3 million years ago), giant animals walked—and slithered—the Earth thanks to warmer temperatures, larger wetlands, and greater amounts of food.

Anacondas have been giants of the animal world for over 12 million years, reveals new research. Analysis of fossils from South America shows that the tropical snakes reached their maximum size 12.4 ...