6 named features carry the IAU descriptor Patera — an irregular or scalloped-edged crater, usually volcanic on Ganymede, out of 280 in the mapped Solar System.
The IAU assigns each feature class on each world a naming theme. Across the 6 paterae with a recorded origin, 3 categories appear, led by Jordan.
Every one has its own page, on the surface it sits on.
The same descriptor is used on 4 other worlds, for 274 more features.