Fark linked up this Live Science summary of new developments regarding the wing shape of an ancient reptile. By using aerodynamic studies, these scientists believe the creature, 225 million year old Sharovipteryx mirabilis, used a "double delta" configuration with the primary flight surfaces attached to the rear legs. This makes it unique in the fossil record. The find also could have implication in the evolution of the pterasours, the other great flying reptile family.