Megalosaurids were an advanced family within Megalosauroidea (though fairly primitive within Theropoda) that included medium- to large-sized theropods from the Mid- to Late Jurassic Period. They are close relatives of the Early & Late Cretaceous spinosaurids. Classically placed before the carnosaur-coelurosaur split, a recent study indicates megalosauroids to be early carnosaurs instead.
- Piveteausaurus divesensis
- Poekilopleuron bucklandii (fragmentary specimens destroyed, placement uncertain, possibly only megalosauroid or metriacathosaurid)
- Streptospondylus altdorfensis (fragmentary, placement uncertain, possibly only megalosauroid)