Mammals Evolved from a Group of Reptiles Known as ____________

question 42

Short Answer

Mammals evolved from a group of reptiles known as ____________ that had mammal-like jaws and limbs positioned partially underneath their bodies.

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Definitions:

Floating Rib

The last two pairs of ribs in humans that are not attached to the sternum or to other ribs, providing flexibility and mobility.

Mandible

The lower jawbone in vertebrates; in insects and other arthropods, one of a pair of mouthparts used for biting and grinding food.

Radius

The bone on the thumb side of the forearm, or a straight line from the center to the circumference of a circle or sphere.

Scapula

is the anatomical term for the shoulder blade, a large, flat triangular bone located in the upper back.