And her position was good on the irregular rim of the basin.

The irregular rim is broken in several locations by overlapping craters.

Zwicky is a considerably eroded formation with an irregular rim and interior.

This crater formation has been heavily damaged by a history of impacts, leaving an irregular, battered outer rim.

It is a heavily eroded feature with an irregular outer rim.

The rim of this crater is worn, distorted and irregular, having a somewhat egg-like outline.

The blastoderm has an irregular rim and a flat bottom where it joins the yolk cell.

Even her small cups have the contours of opening blossoms, with irregular rims defining the petals.

This crater is roughly circular but with an irregular outer rim.

This is an eroded crater with a rough and irregular outer rim.