 The main features that set this species apart from "M. bassanii" include the presence of 17 or 18 dorsal vertebrae, a humerus which is longer than the radius, and a femur which is longer than the tibia.The front of the skull also differs compared to "M. bassanii".According to Olivier Riepple "et al", “a large, plate-like lacrimal is located in front of the tall, columnar prefrontal that defines the anterior margin of the orbit.