Pholidosauridae is here defined to unite taxa more closely related to Pholidosaurus schaumbergensis Meyer 1841 than to other clades of crocodyliforms. The active definition is stem-based and uses the nominotypical species as an internal specifier. There are no previous definitions in the literature.
Pholidosauridae Zittel and Eastman 1902 includes dyrosaurines and precedes the familial taxon Dyrosauridae Broili 1923. Pholidosauridae is sometimes attributed to Williston (1902) in Zittel and Eastman (e.g. Kuhn 1967). Here I follow Buffetaut (1981:34) in his discussion and attribution of the taxon to Zittel and Eastman (1902).