Walt Dickerson: "Tell Us Only the Beautiful Things" w. Wilbur Ware & Andrew Cyrille from LP of the same title (WhyNot)
Archie Shepp w. Hank Mobley: "Sonny's Back" from Yasmina, a Black Woman (BYG) - Just under 15 minutes, but close enough.
Steve Lacy/Mal Waldron: "Hooray for Herbie" from Herbe de L'Oubli /Snake-Out (hat Art)
Johnny Griffin: "All the Things You Are" from Live in Tokyo" (Philips Japan) - A live recording, but Johnny Griffin blows with all he has on this one.
Fred Anderson/Steve McCall: "Within" from Vintage Duets (Okka Disk)
Albert Ayler: "Spirits Rejoice" from Live in Greenwich Village (Impulse) - Another live recording.
Thelonious Monk: "'Round Midnight (In Progress)" from Thelonious Himself (Riverside/JVC XRCD)
I found that when I was looking for cuts over 15 minutes, some that I thought were over that length were under and vice versa. I guess that when the music hits me I'm not that aware of time lengths.