Central Connecticut was still the site of alluvial fans and braided streams into the Jurassic period. Roughly 95% of the dinosaur footprints at Rocky Hill were of the ichnogenus Eubrontes. The dinosaur footprints of Connecticut and those of neighboring Massachusetts have sometimes been regarded as composing a single continuous site. Other reptiles and amphibians left trace fossils in Connecticut as well as dinosaurs. At least 13 species in seven ichnogenera of non-dinosaurian Mesozoic reptile footprint are known from the state.
