Can one be an atheist and believe in an afterlife?

[Thunderbird is the word]

There are some theists that don't believe in or have a conception of an afterlife so conversely could one be an Atheist and believe that consciousness continuing after death is theoretically possible? I mean if we can exist at all without a god and what we know about the universe as a whole is so limited perhaps there could be some sort of organic transfer of your consciousness.