The alligator snapping turtle is a big aquatic species that has a significantly huge head (as compared with other species of turtles). The carapace (upper shell) has 3 popular ridges — one along the center line and one on possibly facet. There is an extra row of scutes (sexy scales) https://riverbdday.snack-blog.com/26791853/manual-article-review-is-required-for-this-article