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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Head of adult black caiman, showing that much of the dark juvenile colouration is retained into the adult animal - unusual for crocodilians which generally lose their juvenile patterns after only a couple of years (although the brighter yellow cross-banding of the juveniles is absent in adults). Compared with the juvenile head, the adult's is less concave, flatter, and has a more pointed tip.

Photograph © Adam Britton

ALL IMAGES:
[click on image for enlargement]

	Head portrait of juvenile		Juvenile held in hand		Juveniles in a holding container
	Juvenile's disruptive camouflage patterns		Adult black caiman floating in water		Sub-adult caiman head