The key pages describe certain characteristics
of crocodilians that you will use in identifying them. They refer you to
pages in the blue or yellow sections that illustrate the species. The first
series of key pages (

to

)
are used to identify your specimen using the morphology of the head of an
adult. Key pages

to

are used to identify untanned hides. Once you are familiarized with crocodilian
identification you may also use the fast key for adult specimens on

.