FAMILY:
ALLIGATORIDAE
A. mississippiensis
A. sinensis
C. crocodilus
C. c. apaporiensis
C. c. fuscus
C. latirostris
C. yacare
M. niger
P. palpebrosus
P. trigonatus
FAMILY:
CROCODYLIDAE
C. acutus
C. intermedius
C. johnstoni
C. mindorensis
C. moreletii
C. niloticus
C. novaeguineae
C. palustris
C. porosus
C. rhombifer
C. siamensis
M. cataphractus
O. tetraspis
T. schlegelii
FAMILY:
GAVIALIDAE
G. gangeticus
DICHOTOMOUS KEY
[German]
The back of the neck of C. cataphractus showing the arrangements of post-occipital and nuchal scales. The photograph clearly shows four post-occipital scales behind the head, adjacent to six nuchal scales (four large scales in a square, anterior to two much smaller scales).
Photograph © Adam Britton
