For example , the colobus monkeys have stubs for thumbs to assist with their arboreal movement , the proboscis monkey has an extraordinary nose , while the snub - nosed monkeys have almost no nose at all .
Several Old World monkeys have anatomical oddities .
The colobus monkeys have stubs for thumbs to assist with their arboreal movement , the proboscis monkey has an extraordinary nose , while the snub - nosed monkeys have almost no nose at all .
Several Old World monkeys have anatomical oddities .