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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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Caiman crocodilus

Sub-adult spectacled caiman showing that, while its mouth can be open underwater, a fleshy extension of the lower palate prevents water from entering the oesophagus. Crocodilians possess vertical, elliptical pupils, which are usually contracted during daylight. Photographs of completely round pupils are very hard to take because of the flash-light normally used.

Photograph courtesy of John White

ALL IMAGES:
[click on image for enlargement]

Click Head-on view of floating adult caiman Click Top-down view of adult head Click Sub-adult caiman partially submerged





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