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
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Nile crocodiles possess what is termed a "classic" skin - i.e. there are no bony plates (osteoderms) present under the skin. This makes the skin ideal for tanning, and therefore this species has suffered considerably from over-hunting in recent times. Conservation measures have helped to make this species' position more secure, but certain populations are still depleted.

Photograph courtesy of Steve Grenard

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	Sub-adult head amongst a group		Head of adult from above (b&w)		Adult basking on grass
	Detailed adult head portrait (b&w)