In recent years, paleontology has been rife with claims of feathered dinosaurs. Many of these claims are based on what can best be termed filaments, generally defined as long strands of an unknown material. Evolutionists classify them as stage one or two feathers, then claim that these filaments are made of the same structural material as modern feathers, all to show that they are, in fact, feathers. While there are so-called dinosaurs with undisputed feathers, particularly among the Dromaeosaurs, the evidence of feathers is limited to filaments or fibers in many other fossils. It is these filaments that will be the focus of this paper. Based on current data, it seems likely that true feathers are only associated with true birds, while filaments are associated with dinosaurs.