What is a rounded sculpture that was placed over the portal of a medieval church?

Question

Quizplus · Accepted Answer

Rounded sculptures that were placed over the portal of medieval church are tympanum (or tympana).
Key Takeaway: Tympana are rounded architectural sculptures that are placed over the portal of medieval churches and are typically bounded by an arch and a lintel. Usually, the tympana contain sculptures or decorations of religious scenes. Tympana are usually surrounded by bands of molding, called the archivolt.

What Is a Rounded Sculpture That Was Placed Over the Portal