Sources
Page 1
header image: http://skywalker.cochise.edu/wellerr/students/gastrolith/project.htm
Page 2
header image: www.lvmnh.org
Page 3
header image: http://blogs.scientificamerican.com/tetrapod-zoology/2012/07/31/freshwater-crocodile-tet-zoo-crocs-pt-v/
header image: http://skywalker.cochise.edu/wellerr/students/gastrolith/project.htm
Page 2
header image: www.lvmnh.org
Page 3
header image: http://blogs.scientificamerican.com/tetrapod-zoology/2012/07/31/freshwater-crocodile-tet-zoo-crocs-pt-v/