| This fossil was originally described as the species Canis milleri, but restudy has shown that it is a subspecies of C. lupus, the gray wolf. |
| Biologists have recognized eleven endemic subspecies of babblers there as well. |
| Based on these specimens, the races of two species of buttonquail were revised and five new subspecies described. |
| The allopatry of Middle American subspecies, and their diversification, may be attributable to habitat preferences. |
| There are 16 subspecies whose range spreads from India as far as southern China and the Philippines. |
| The Macal River Valley in Belize is home to three-toed tapirs, elusive jaguars, and a rare subspecies of scarlet macaw. |
