VIRGINA
FREDERICKSBURG AREA
PATUXENT FORMATION
APTIAN STAGE
MIDDLE GALLIC SUBEPOCH
UPPER EARLY CRETACEOUS EPOCH
EARLY CRETACEOUS
ICHNOSTEM: TETRAPODIPIDA NOVA
ICHNOSUPERCLASS: AMNIOTAIPIDII NOVA
ICHNOCLASS: AMPHIBIPIDIDA NOVA
Anurian
Gen. sp indet.
ICHNOCLASS: REPTILIPEDIA VIALOV, 1966
ICHNOSUBCLASS: CHELONOMORPHIPEDII EMEND VIALOV, 1966
ICHNOORDER: TESTUDIPEDIA EMEND VIALOV, 1966
Family: Incerate sedis
Gen. sp indet.
ICHNOSUBCLASS: DIAPSIDIPIDII NOVA
ICHNOSTEM-GROUP: NEODIAPSIDIPEDII NOVA
ICHNOINFRACLASS: NEODIAPSIDIPEDII NOVA
ICHNOSUBDIVISION: ARCHOSAURIPEDIDII NOVA
ICHNOINFRADIVISION: CROCODYLOTARSIPEDIDII NOVA
ICHNOSUPERORDER: CROCODYLOMORPHIPEDIDA WALKER, 1968
Ichnofamily: BATRACHOPOIDIDAE emend Lull, 1904
Gen. sp indet.
ICHNOLEGION: DINOSAUROMORPHIPEDA NOVA
ICHNOSUBLEGION: DINOSAURIFORMEIPEDIDII NOVA
ICHNOSUPERCOHORT: DINOSAUROPEDIDA NOVA
ICHNOCOHORT: THEROPODIPEDIA NOVA
ICHNOSUPERORDER: NEOTHEROPODOPEDIDA NOVA
ICHNOORDER: NEOTETANURIPEDIDII NOVA
ICHNOSUBORDER: CARNOSAURIPODOIDEI emend VYLOV, 1988
Ichnofamily: MEGALOSAURIPODIDAE emend Vylov, 1988
Megalosauripus sp
= Megalosauropus spICHNOCOHORT: ORNITHISCHIFORMEIPIDA NOVA
ICHNOSUPERORDER: SAUROPODOMORPHIPIDA NOVA
Ichnoorder: SAUROPODINA emend Vylov, 1988
Brontopodus sp
Genus nova?
ICHNOMAGNORDER: ORNITHISCHIPIDA NOVA
ICHNOSUPERORDER: NEORNITHISCHIPIDA NOVA
ICHNOGRANDORDER: ORNITHOPODIPDIA NOVA
ICHNOMICRORDER: EUORNITHOPODIPIDA NOVA
ICHNOORDER: HYPSILOPHODONIPEDII NOVA
Ichnofamily: HYPSILOPHODONIPODIDAE Nova
Gypsichnites sp
Gen. sp indet.
ICHNOORDER: IGUANODONTIPIDIA NOVA
ICHNOSUBORDER: ANKYLOPOLLEXIPEDIDA NOVA
ICHNOINFRAORDER: STYRACOSTERNIPIDA NOVA
ICHNOPARVORDER: HADROSAURIFORMIPEDIDA NOVA
Ichnosuperfamily: IGUANODONTIDEA Nova
Ichnofamily: IGUANODONTIPODIDAE emend Vylov, 1988
Caririchnium sp
Ichnosuperfamily: HADROSAUROIDIPEDIA Nova
Ichnofamily: HADROSAURIOPDIDAE Vylov, 1988
Amblydactylus sp
ICHNOSUPERORDER: EURYOPDIPIDA NOVA
ICHNOGRANDORDER: ANKYLOSAURIFORMIPIDA NOVA
Ichnofamily: TETRAPODOSAURIDAE emend Sternberg, 1932
Tetrapodosaurus sp
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