The alligator snapping turtle is a big aquatic species which has a noticeably large head (as compared to other species of turtles). The carapace (higher shell) has 3 distinguished ridges — 1 along the middle line and 1 on either aspect. There exists an additional row of scutes (sexy scales) https://deutschenfhrerscheinkaufe69494.tribunablog.com/an-unbiased-view-of-alligator-snapping-turtle-41042207