A group of 200 species of closely related bats evolved wildly divergent jaws, a study shows. They don’t know it, but Darwin’s finches changed the world. These closely related species—native to the ...

Tiktaalik, the 375-million-year-old fish fossil, is best known for its anatomy suggesting it may have walked out of the water and is also a very popular meme. Sung to the tune of The Killers’ Mr.

Whole skeleton of Dipterus, an extinct lungfish from the middle Devonian period. Specimen (UMMP 16140) from the University of Michigan Museum of Paleontology. ANN ARBOR—If you're reading this sentence ...