Overview Most popularly known as the Father of American Vertebrate Paleontology, Joseph Leidy was also the Founder of American Parasitology, a Professor of Anatomy at the University of Pennsylvania, a pioneering protozoologist, an influential teacher of Natural History, a passionate microscopist, an accomplished scientific illustrator, and an expert on a variety of subjects. He published scientific papers on more than a thousand extinct and living protozoa, fungi and animals as well as an assortment...