I would like to state my opinion on the matter. I believe the claims list is a bit of an issue because it limits newer people right from the get-go. I believe that the initial contract holder (person who originally made that entry) should be bolded so people know who to contact, but if someone else wishes to use that animal they would just have to message the player.
If the player does not respond within 1(2?) week(s), then they should be able to claim it as well. They also would not be allowed to remove anything that the owner created on that wiki page, but would be allowed to add to it as a subsection if they wished.
Example: I am the initial 'claim holder' to raptors because I made the page. If ACad Randnin wants to use them, he would message me. I would either say okay or, if I don't respond, it's taken as an automatic okay (and for the sake of the community, the answer should always be okay...Or at least an okay after some RP event. Don't flat out say no
) He would then be able to amend the raptor page by adding his own subsection to describe his raptors if he wishes.
For claims made by players that no longer exist, they should still be bolded for the fact that they wrote it, but that should be a summon that's up for grabs. And the whole subspecies thing might make things confusing with all the entries that could be made. It would be easier to claim a whole family than saying you can summon antheraea brunei instead of antheraea broschi.
That's my opinion on the whole thing. Make it a bit simpler, no need for getting rid of anything as well as making it accessible for newer players if they wish. I know that SL has a wiki site of its own as far as gameplay goes, but maybe a page should be made that lists general guidelines for RP as well?