The alligator snapping turtle is a large aquatic species with a significantly huge head (in comparison with other species of turtles). The carapace (upper shell) has three well known ridges — one alongside the center line and 1 on either side. There is an additional row of scutes (horny scales) https://kylerfcdsd.blogunok.com/27081547/5-easy-facts-about-alligator-snapping-turtle-described