 However, in noasaurines and elaphrosaurines (but not necessarily other genera such as "Deltadromeus"), this fourth trochanter was much smaller and lower than the enlarged crest-like structure present in the majority of basal theropods; only a few other groups of theropods (coelophysoids, coelurosaurs, and a few species of abelisaurids) also have reduced fourth trochanters.In addition, the two subfamilies have a metatarsal II (the foot bone connected to the innermost major toe) which was flattened from the side.Further reductions to this metatarsal were present in noasaurines (particularly "Velocisaurus").