Here’s a guess. Just like the camel uses his hump to store water, the sail dinosaur probably used it for the same reason. Secondary reason was to dispense heat. More area of skin, more cooling
35 posted on 12/17/2015 2:44:36 PM PST by Dr. Bogus Pachysandra
(Don't touch that thing Don't let anybody touch that thing!I'm a Doctor and I won't touch that thing!)