Bristles

Paleontologists have discovered a bizarre worm-like creature from the Cambrian Period that has features associated with three groups of living animals. Just a half-inch long and covered in bristles, the armored Wufengella is providing clues as to how ancient filter-feeders evolved.Wufengella is about 518 million years old, timing it toward the tail-end of the Cambrian explosion. The Cambrian explosion was a period of remarkable evolutionary diversification in animal life. Life on the seafloor particularly flourished:…