- An online guide to Michigan's reptiles and amphibians. Nick Scobel, an enthusiastic herpetologist, also covers herpetology and field herping and includes many fine photographs.
- An educational website including information on all types of reptiles, their behavior and classification, with articles on snakes, lizards, turtles and crocodiles.
- Checklist of crocodilians, tuatara, and turtles of the world: A web version of the long out-of-print edition originally published by the Association of Systematics Collections in 1989.