re: Cloned mammoth in the offing. Perhaps Neanderthals next.
The report of the resurrection of a recently extinct ibex might support the feasibility, though it is important to note the cloned animal survived only for minutes, likely because of errors in the genetic sequencing:
Hello again, Pyrenean ibex: Can cloning resurrect an extinct species?
Feb 3, 2009 05:07 PM in Biology
http://www.sciam.com/blog/60-second-science/post.cfm?id=pyrenean-ibex-restoring-species-fro-2009-02-03
Bob Clark