A variety of other kinds of animal like crocodilians, phytosaurs, and lizard-like creatures left footprints there. The Solite Quarry is most famous for its fossil insects. This is the only place on earth where complete well-preserved Triassic insects are known from. The oldest known examples of many living groups have been found here. Insects of the Solite Quarry include staphylinid beetles, caddis-flies, belostomatids, and thrips. Fossil insects are common at other places in Virginia as well. Small specimens were often preserved associated with unusually high concentrations of conchostracans. At Leaksville Junction, near the border with North Carolina, dinosaur footprints have been discovered in the Late Triassic Cow Branch Formation. These may be the oldest dinosaur tracks in the eastern United States. The theropod ichnogenus "Grallator" and an abundance of the ornithischian ichnogenus "Atreipus" have been found in this unit. Other finds include remains from the phytosaur Rutiodon and the lizard-like "Tanytrachelos". At least three fossil sites have been discovered for the Late Triassic Manassas Sandstone of Fairfax County. Dinosaur tracks of the ichnogenus "Grallator" have been reported from this unit as have the ichnogenera "Apatopus", "Brachychirotherium", and "Chirotherium", which were left by other kinds of archosaurs. Body fossils are known from fish and the phytosaur "Rutiodon". The Late Triassic dinosaur footprints in the Balls Bluff Sandstone are of such number and quality that the unit is considered one of the best sources of these fossils in the world. Near Culpeper the Balls Bluff Sandstone has produced the ornithischian ichnogenus "Gregaripus", the prosauropod ichnogenus "Agrestipus", and the theropod ichnogenera "Grallator" and "Kayentapus". Aetosaur tracks have also been found in the Balls Bluff near Culpeper. One Balls Bluff Grallator track was found near Manassas National Battlefield. For a 30 million year interval spanning the Late Triassic-Early Jurassic boundary, the Culpeper basin was an extensive lake.[41]  A diverse fish community swam in what is now Virginia during the Early Jurassic.