Friends of Extinction is basically an expanded two-CD reissue of Dinosaurs' sole album, 1988's Dinosaurs, with two outtakes and an entire disc of previously unreleased 1985-1989 live material. It's a little mean-spirited, perhaps, to criticize the recordings of a band that - as the liner notes make clear - approached music-making primarily as fun, with virtually no ambitions to make a steady professional career out of the group. Still, their album was no doubt not wholly what fans of the San Francisco bands that had spawned the players were expecting. The opening synth pop rhythms of "Lay Back Baby" seemed to indicate a band determined to get in tune with the sound of the mid-'80s, rather than one set on re-creating past psychedelic glories…