Spontaneous Generation notes:

who refers to Link (the Link is a link, but that is also his name) (Urwelt, page 327 – http://books.google.com/books?id=gjUCAAAAQAAJ&printsec=frontcover&source=gbs_ge_summary_r&cad=0#v=onepage&q&f=false

However, Slifkin, (overview) and others, notably among many, Sid (Schneir) Z. Leiman, Professor of Jewish History and Literature in Brooklyn College and at YU posits in his book Hazon Nahum that the Tiferes Yisrael misunderstood Link and all subsequent commentators (including our own Margaliyos Hayam) accepted that error, in error.

As for the Rambam, accoding to R”Y Kapach he did not think it actually existed.