Eric Walker added Northern white rhinoceros to Ceratotherium simum, and added Ceratotherium simum to Ceratotherium

Eric Walker added Ceratotherium simum to Ceratotherium, and added Ceratotherium to Rhinocerotoidea

Eric Walker added Rhinocerotidae, Ceratotherium and Coelodonta and Rhinocerotoidea - Wikipedia to Rhinocerotoidea, and added Rhinocerotoidea to Ceratomorpha