"survivor" in obituaries

[Mark Spahn]

The words "survive" and "survivor" are used in  newspaper obituaries
in a meaning that is not listed in any dictionary I have consulted.

Typical usages (taken from the Saturday, January 14, 2006 Buffalo News) are:
     His survivors include <list of relatives of the deceased>
     Survivors include <list of relatives>
     Surviving are <list of relatives>
     She is survived by <list of relatives>

The only meaning of "to survive <someone>" that dictionaries list
is "to outlive <someone>", that is, to be alive after someone has died.
According to this definition, I am a survivor of anyone who is dead,
including Pope John Paul II, Adolf Hitler, Mohammed, and Atilla the Hun.
But newspaper obituaries use "survive" in a different sense,
a sense that seems to requires that one also be a relative of, 
or at least a close associate of, the person who has died. 

Is the Buffalo News unique in using "survivor" in this restricted sense?
Or are lexicographers negligent in not having noted this meaning?

-- Mark Spahn  (West Seneca, NY)