This was added to the BG section. Unless it's citeable, it seems like speculation to me:

One category excluded from the book is that of Destroyed Worlds, which had it been included would have been complete with a listing of Extinct Races.

As such, I've removed it to the talk page. -- sulfur 13:11, April 9, 2012 (UTC)

That text was added SPECIFICALLY because it listed material excluded from the book. In the course of the voyages of the Enterprise, including all officially-recognized starships so named, its personnel have witnessed, first-hand in all too many cases, a number of worlds be destroyed--and a number of intelligent races extincted in such destructions.
Parker Gabriel (SCC-47106) 11:53, March 5, 2013 (UTC)

If it isn't mentioned in the book specifically, then it doesn't belong. -- sulfur (talk) 13:25, March 5, 2013 (UTC)

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