HELPING THE OTHERS REALIZE THE ADVANTAGES OF JW001

Pteranodon is a sizable flying reptile by using a wingspan measuring so long as a school bus. These reptiles didn't have feathers but instead had a basal sort of integument alongside a similar lineage from which feathers developed, termed pycnofibers. Pycnofibers were incredibly hair-like in appearance and, like hair, had been made from keratin. t