The alligator snapping turtle is a large aquatic species that has a significantly massive head (when compared to other species of turtles). The carapace (higher shell) has three well known ridges — 1 along the center line and 1 on possibly aspect. You can find an extra row of scutes https://red-hypo-translucent-bear90122.thenerdsblog.com/32331609/manual-article-review-is-required-for-this-article