Every living cell on Earth today can trace its ancestry in a direct, unbroken line to that first cell, without a singe cell dying along that entire lineage. Theoretically, these branches leading off to the right should include every living thing on Earth, from our closest relatives (chimps and bonobos) branching off at the top, to our most distant relatives (bacteria) branching off right down at the bottom, not long after life began. Strepsirrhini (lemurs etc) are the first group to break away from our branch of the primate order, and like most mammals they have wet noses, but haplorhini (tarsiers, monkeys and apes) do not, so it is likely that our noses dried up some time roughly 63 to 66 million years ago.