Assertion: iguanian lizard | /r/HasAspect | venom-secreting glands
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Source sentences:
text: The Iguanian Lizard retains characteristics of the ancestral venom system, having venom-secreting glands on both the upper and lower jaws, whereas the advanced snakes and anguimorph lizards (including Monitor Lizards, Gila Monster and Beaded Lizard) have glands only on one of the jaws, lower or upper.