Also Ridiculous

D. and N. Soren's 1999 A Roman Villa and a Late Roman Infant Cemetery: Excavation at Poggio Gramignano Lugnano in Teverina [worldcat], which is a useful publication, costs $608.00 at Amazon.com.

If you happen to have access to a library that spent the money to acquire the volume, you can find a useful discussion of the pottery in part 2, with good photographic documentation of amphoras reused as child burials on plates 236 to 250. Black-and-white, but you can still get a sense of North African and other fabrics.