COMPARING THE HUMAN SKULL TO THAT OF OTHER VERTEBRATES: THE LOWER JAW AND HYOID

humanhyoid

In humans, the lower jaw is composed of one bone and the hyoid bone is suspended around the larynx. The jaws hold two pairs of incisors, one pair of canines, two pairs of premolars, and three pairs of molars. Do other vertebrates possess these bones in their faces? In what way are they similar or different from humans?

alligator and opossum jaws

alligatoropossum

lemur, tarsier, and rhesus monkey jaws

lemurtarsierrhesus

shark and bony fish teeth

sharkfish

salamander and frog teeth

salamanderfrog

opossum, vervet monkey, and rhesus monkey teeth

opossumvervet monkeyrhesus monkey

turtle and cat skulls

turtlecat

WHAT SPECIFIC SIMILARITIES AND DIFFERENCES DID YOU NOTICE BETWEEN THE HUMAN STRUCTURES AND THOSE OF OTHER VERTEBRATES? HOW DO THESE STRUCTURAL SIMILARITIES/DIFFERENCES COMPARE TO SIMILARITIES/DIFFERENCES IN LIFESTYLE? WHAT MAKES HUMANS UNIQUE? WHAT RELATIONSHIPS BETWEEN ORGANISMS DO YOU FEEL ARE SUPPORTED BY YOUR COMPARISONS OF THEIR FEATURES? WHAT FEATURES DO YOU FEEL DEFINE A PARTICULAR GROUP?
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