Dinosaurs - Trilobites and the Incredible Shrinking and Growing Creatures of the Past

Some ancient creatures were enormous compared to their modern relatives, while others were surprisingly tiny — but why? Starting with the fascinating trilobite, a roly-poly-like sea creature that roamed ocean floors hundreds of millions of years ago, this episode explores how environmental conditions shaped the sizes of animals throughout history. From giant dragonflies to miniature ancient horses, listeners discover the surprising forces that determine how big or small a creature can grow.