Derived from Latin puteus ('well'), a term for enclosures around profane draw-wells, some of which were covered, or for stones pointing out sacred lightning marks. Particularly in the neo-Attic art of Hellenistic times, puteals were a popular place for relief sculpture.
E. Bielefeld, Ein neuattisches Puteal in Kopenhagen, in: Gymnasium 70, 1963, 338-356
K. Schneider, s. v. P., RE 23, 2034-2036
O. Viedebantt, s. v. Forum Romanum (46. Das Puteal Libonis), RE Suppl. 4, 511.