An animal alleged to be Loch Ness Monster was spotted by a group on a Boston Duck Tour yesterday. An observer of the incident provided the following drawing of the encounter. An area paleontologist, speaking on the condition of anonymity, told the Bostonist in an exclusive interview that, "the positioning of the flippers, combined with the angle of the jawbone, leads me to believe that the creature represented in the meticulously executed, true-to-life drawing is......