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 sp

ICHNOCOHORT: 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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