bilaterality

These organs retain their normal bilaterality, but the body is, as a rule, inequilateral.

This bilaterality becomes still more marked in the highest class of Radiates, the Echinoderms.

The loose bilaterality of the Shoshone was ideally adapted to their mode of existence.

The loose bilaterality seen by Eggan as a characteristic of Plains society was part of the earlier Shoshone social background.