Until recently, many dryosaurids have been regarded as
dubious (
Callovosaurus) or as species of the type member,
Dryosaurus (
Dysalotosaurus,
Elrhazosaurus and
Valdosaurus). However, more recent studies redescribe these genera as valid. Under the Phylocode, Madzia
et al. (2021) formally defined Dryosauridae as "the largest clade containing
Dryosaurus altus but not
Iguanodon bernissartensis." The
cladogram below follows their chosen reference phylogeny, taken from the description of
Orthomerus dolloi. |label1=
Iguanodontia}} ==References==