Earth once had 26-foot giants 400 million years ago, and they were unlike anything alive today |
For over a century, it was assumed that science had a handle on the big categories of life on Earth: plants, animals, fungi, and microorganisms were the stanchions of biological classification. Now, however, a towering ancient organism called Prototaxites has forced scientists to reconsider those assumptions in their entirety. Reaching as tall as 26 feet…