Every animal generic name in the Grand Canyon literature base is included in this list. Complete bibliographical citations for individual entires can be found in the bibliography (Part 1). Page and figure citations are listed for every mention of a generic name without an included species–as a generic name alone, in conjunction with the specific indication “sp.,” in comparison with a species (“cf.”), or as an indication of affinity to a species (“aff.”). When appropriate, cross-indexes appear to the index to animal species (Index 3). Genera that have never appeared in the Grand Canyon regional literature without an accompanying specific name are included in this index, but with a cross-reference to Index 3.