Palaeothanatologist?
Tommy Tyrberg
Paleoextinction may be a neologism but it sounds plausible to me. You can
see why no-one wants to be called a paleoextinctist but paleoextinctologist
might be ok. I haven't got a dictionary of ancient Greek but that might lead to
some ideas.
Maybe if the name sounds good enough someone will admit to being one!
Regards Jeremy Lockwood