RE: 28 super slam species
It would be an awesome quest!!A questthat I would gladly pursue if money was no object. Realistically though, there are a few species that don't intrest me at all but I would love to give it a go. They do NOT have to ALL be P&Y qualifying animals and only a couple of the Super Slammers have accomplished that feat.
Africa has MANY more species than this list however they do have a recognize an African Slam that is comprised of around 35 species. I know Game Trackers Bob Eastman has done it.
Personally I would like a few mini Slams of my own and one would be the Grand Slam of Deer by taking all 5 species. Another Slam that I dream of with my bow is the N.W.T.F Turkey Grand Slam by bowkilling all 4 species in the U.S.. That seems like it would be plenty to keep a bowhunter busy!