Hayden, F. V. (Ferdinand Vandeveer), 1829-1887
Ferdinand Vandeveer Hayden was born September 7, 1829, in Westfield Massachusetts. He earned an A.M. from Oberlin College, and later of Doctor of Medicine from Albany Medical College. Hayden developed an interest in paleontology and geology during his medical studies. He began exploring and collecting for one of his professors, Prof. James Hall, primarily west of the Mississippi. Eventually his geological and paleontological explorations would take him as far was as the Yellowstone River and through much of the Nebraska territory. During the Civil War, his collecting ceased and he served in the Union Army as an assistant surgeon. After the Civil War he collected in the western United States for the Academy of Natural Science of Philadelphia. By the 1870s, Hayden organized expeditions into Wyoming and Colorado territory. His collection now resides at the Academy of Science of Saint Louis, and in part with the Academy of Natural Sciences of Philadelphia.