The venter, on the longitudinally convex side, is narrow.

Placenticeras has a very involute shell with slightly convex sides and a very narrow venter.

In front of each hole were one or two claymores, faced convex side toward the enemy.

The shell has an elevated-conical shape with slightly convex sides.

The convex side of this disk has type 2 calcium-binding sites.

Convex angles have somewhat convex sides and open to the lateral (outer) area of the tusk.

The convex side rested against his flesh.

Struck its smooth gleaming, convex side.

The height of the shell is up to 13.4 mm, three times as long as wide, rimate, spindle-shaped, with slightly convex sides, rather thin.

The slightly convex sides steepened at the top where the shining pillar of light beamed out of a wide opening.