2515 Ichthyomyzon castaneus Girard, 1858 Petromyzontidae Northern lampreys Petromyzontinae Petromyzontiformes Petromyzonti Chestnut lamprey North America: Hudson Bay, Laurentian Great Lakes and Gulf of Mexico basins. UBC 590429 46 N 92 W Ichthyomyzon castaneus AMNH 8951 Ichthyomyzon castaneus AMNH 10104 1930 Ichthyomyzon castaneus AMNH 27258 1962 Ichthyomyzon castaneus AMNH 52719 1976 Ichthyomyzon castaneus AMNH 52739 1976 Ichthyomyzon castaneus AMNH 52817 1976 Ichthyomyzon castaneus AMNH 52824 1976 Ichthyomyzon castaneus