He stopped when he felt a vertical ridge embedded in the bark.

They have a distinctive tooth at the shoulder and the vertical ridges are very apparent.

Each block is flat on top and narrow, vertical ridges have been carved into the sides.

McCoy had three vertical ridges on an almost bald head.

The surface is smooth, sometimes with small vertical ridges.

The dark brown bark has wrinkles and vertical ridges.

The type tooth has fourteen vertical ridges on the inner side.

Now Norman could see a sharp vertical ridge in the body.

The vertical ridges only appear over the sea.

The vertical ridges also passed through some non-participating countries.