There is a single nostril near the eyes.

The nose is actually a flattened single nostril flared at the ends.

They have a single nostril and seven gill openings on either side.

The lamprey's gills are arranged in a straight line immediately behind the eye, and a single nostril is located between the eyes.

The nose, what there was of it, had a single slit nostril.

A single nostril on each side of the forehead, instead of two.

The single nostril is between the eyes and seven naked gill pores are behind them.

In front there were two eyes and a single central nostril, like that of a lamprey.

The smallest of them began to weep, his single nostril flaring and then sealing shut.

And she saw that the trunk had just a single nostril.