EARLY CRETACEOUS
ICHNOSTEM: TETRAPODIPIDA NOVA
_____________________________________________________________________________________ICHNOSUPERCLASS: AMNIOTAIPIDII NOVA
ICHNOCLASS: REPTILIPEDIA VIALOV, 1966
ICHNOSUBCLASS: DIAPSIDIPIDII NOVA
ICHNOSTEM-GROUP: NEODIAPSIDIPEDII NOVA
ICHNOINFRACLASS: NEODIAPSIDIPEDII NOVA
ICHNOSUBDIVISION: ARCHOSAURIPEDIDII NOVA
ICHNOLEGION: DINOSAUROMORPHIPEDA NOVA
ICHNOSUBLEGION: DINOSAURIFORMEIPEDIDII NOVA
ICHNOSUPERCOHORT: DINOSAUROPEDIDA NOVA
ICHNOCOHORT: ORNITHISCHIFORMEIPIDA NOVA
ICHNOSUPERORDER: SAUROPODOMORPHIPIDA NOVA
Ichnoorder: SAUROPODINA emend Vylov, 1988
Gen. sp indet.
MARYLAND
PATUXENT FORMATION
POTOMAC GROUP
EARLY CRETACEOUS
ICHNOSTEM: TETRAPODIPIDA NOVA
_____________________________________________________________________________________ICHNOSUPERCLASS: AMNIOTAIPIDII NOVA
ICHNOCLASS: REPTILIPEDIA VIALOV, 1966
ICHNOSUBCLASS: DIAPSIDIPIDII NOVA
ICHNOSTEM-GROUP: NEODIAPSIDIPEDII NOVA
ICHNOINFRACLASS: NEODIAPSIDIPEDII NOVA
ICHNOSUBDIVISION: ARCHOSAURIPEDIDII NOVA
ICHNOSUPERCOHORT: AVEMETATARSALIPEDII NOVA
ICHNOMAGNORDER: PROLACERTIFORMIPEDIDA NOVA
ICHNOORDER: PTEROSAURIPEDIDA EMEND VIALOV, 1966
Ichnofamily: PTERAICHNIDAE emend Lockley, Logue, Moratalla, Hunt, Schultz & Robinson, 1995
Gen. sp indet.
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
Gen. sp indet.
ICHNOSUPERORDER: NEOTHEROPODOPEDIDA NOVA
ICHNOORDER: NEOTETANURIPEDIDII NOVA
ICHNOSUBORDER: AVETHEROPODIPIDA NOVA
ICHNOMICRORDER: COELUROSAURIPIDIDA NOVA
ICHNOORDER: MANIRAPTORFORMIPIDA NOVA
ICHNOSUBORDER: MANIRAPTORIPIDA NOVA
ICHNOINFRAORDER: PARVEPIDA NOVA
ICHNOPARVORDER: DEINONYCHOSAURIPEDII NOVA
Ichnofamily: DROMAEOSAURIPODIDAE Nova
Gen. sp indet.
ICHNOCOHORT: ORNITHISCHIFORMEIPIDA NOVA
ICHNOSUPERORDER: SAUROPODOMORPHIPIDA NOVA
Ichnoorder: SAUROPODINA emend Vylov, 1988
Gen. sp indet.
ICHNOMAGNORDER: ORNITHISCHIPIDA NOVA
ICHNOSUPERORDER: NEORNITHISCHIPIDA NOVA
ICHNOGRANDORDER: ORNITHOPODIPDIA NOVA
ICHNOMICRORDER: EUORNITHOPODIPIDA NOVA
ICHNOORDER: HYPSILOPHODONIPEDII NOVA
Ichnofamily: HYPSILOPHODONIPODIDAE Nova
Gen. sp indet.
ICHNOORDER: IGUANODONTIPIDIA NOVA
ICHNOSUBORDER: ANKYLOPOLLEXIPEDIDA NOVA
ICHNOINFRAORDER: STYRACOSTERNIPIDA NOVA
ICHNOPARVORDER: HADROSAURIFORMIPEDIDA NOVA
Ichnosuperfamily: IGUANODONTIDEA Nova
Ichnofamily: IGUANODONTIPODIDAE emend Vylov, 1988
Gen. sp indet.
ICHNOMICRORDER: MARGINOCEPHALIPIDA SERENO, 1986
INCHNOORDER: CERATOPIAIPIDA NOVA
ICHNOSUBORDER: NEOCERATOPIAIPIDA NOVA
ICHNOINFRAORDER: CORONOSAURIPIDA emend SERENO, 1986
ICHNOPARVORDER: CERATOPOMORPIDA NOVA
Ichnofamily: CERATOPOPIDII Nova
Gen. sp indet.
ICHNOSUPERORDER: EURYOPDIPIDA NOVA
ICHNOGRANDORDER: ANKYLOSAURIFORMIPIDA NOVA
Gen. sp indet.
ICHNOCLASS: MAMMALIPIDA NOVA
Incertae sedis
Gen. sp indet
MARYLAND
ARUNDEL FORMATION
POTOMAC GROUP
UPPER APTIAN-LOWER ALBIAN STAGE
MIDDLE GALLIC SUBEPOCH
UPPER EARLY CRETACEOUS EPOCH
EARLY CRETACEOUS
STEM: TETRAPODA GOODRICH, 1930
SUPERCLASS: AMNIOTA HAECKEL, 1866
CLASS: REPTILIA LAURENTI, 1768
SUBCLASS: DIAPSIDA OSBORN, 1904
SUPERLEGION: NEODIAPSIDA BENTON, 1985
LEGION: ARCHOSAUROMORPHA HUENE, 1946
SUBLEGION: DINOSAUROMORPHA BENTON & NORMAN IN BENTON, 1985
INFRALEGION: DINOSAURIFORMES NOVAS, 1992
SUPERCOHORT: DINOSAURIA OWEN, 1842
COHORT: THEROPODA EMEND MARSH, 1881
AVEPODA PAUL, 2002
SUPERORDER: NEOTHEROPODA BAKKER, 1986
GRANDORDER: TETANURAE GAUTHIER, 1986
MICRORDER: COELUROSAURIA HUENE, 1914
ORDER: MANIRAPTORFORMES HOLTZ, 1996
SUBORDER: ORNITHOMIMOSAURIA BARSBOLD, 1976
Family: ORNITHOMIMIDAE Marsh, 1890
Incertae sedis
non Archaeornithomimus? affinis
= Coelosaurus affinis
= Ornithomimus affinis
= Ornithomimus (Archaeornithomimus) affinis
_____________________________________________________________________________________
MARYLAND
SEVERN FORMATION
EARLY LATE MAASTRICHTIAN STAGE
UPPERMOST SENONIAN SUBEPOCH
GULF EPOCH
LATE CRETACEOUS
STEM: TETRAPODA GOODRICH, 1930
SUPERCLASS: AMNIOTA HAECKEL, 1866
CLASS: REPTILIA LAURENTI, 1768
SUBCLASS: DIAPSIDA OSBORN, 1904
SUPERLEGION: NEODIAPSIDA BENTON, 1985
LEGION: ARCHOSAUROMORPHA HUENE, 1946
SUBLEGION: DINOSAUROMORPHA BENTON & NORMAN IN BENTON, 1985
INFRALEGION: DINOSAURIFORMES NOVAS, 1992
SUPERCOHORT: DINOSAURIA OWEN, 1842
COHORT: ORNITHISCHIFORMES COOPER, 1985
MAGNORDER: ORNITHISCHIA SEELEY, 1888
SUPERORDER: NEORNITHISCHIA COOPER, 1985
GRANDORDER: ORNITHOPODA MARSH, 1871
MICRORDER: EUORNITHOPODA SERENO, 1986
ORDER: IGUANODONTIA DOLLO, 1888
SUBORDER: ANKYLOPOLLEXIA SERENO, 1986
INFRAORDER: STYRACOSTERNA SERENO, 1986
PARVORDER: HADROSAURIFORMES SERENO, 1997
SUPERFAMILY: HADROSAUROIDEA COPE, 1869 (SENSU SERENO, 1986)
Family: HADROSAURIDAE COPE, 1869
Incertae sedis
Gen. sp indet.
____________________________________________________________________________________
MARYLAND
MONMOUTH GROUP
MIDDLE MAASTRICHTIAN STAGE
UPPERMOST SENONIAN SUBEPOCH
GULF EPOCH
LATE CRETACEOUS
STEM: TETRAPODA GOODRICH, 1930
_____________________________________________________________________________________SUPERCLASS: AMNIOTA HAECKEL, 1866
CLASS: REPTILIA LAURENTI, 1768
SUBCLASS: DIAPSIDA OSBORN, 1904
SUPERLEGION: NEODIAPSIDA BENTON, 1985
LEGION: ARCHOSAUROMORPHA HUENE, 1946
SUPERCOHORT: CRUROTARSI SERENO & ARCUCCI, 1990
COHORT: CROCODYLOTARSI BENTON & CLARK, 1988
MAGNORDER: SUCHIA KREBS, 1974
SUPERORDER: CROCODYLOMORPHA WALKER, 1968
GRANDORDER: CROCODILIFORMES HAY, 1930
MICRORDER: MESOEUROCROCODYLIA WHETSTONE & WHYBROW, 1983
ORDER: MESOSUCHIA EMEND HUXLEY, 1875
PARVORDER: METASUCHIA BENTON & CLARK, 1988
INFRAORDER: TETHYSUCHIA BUFFETAUT, 1982
Family: DYROSAURIDAE de STEFANO, 1903
Hyposaurus rogersii
MARYLAND
EOCENE EPOCH
MIDDLE PALEOGENE PERIOD
TERTIARY SUBERA
CENOZOIC ERA
STEM: TETRAPODA GOODRICH, 1930
_____________________________________________________________________________________SUPERCLASS: AMNIOTA HAECKEL, 1866
CLASS: REPTILIA LAURENTI, 1768
SUBCLASS: DIAPSIDA OSBORN, 1904
SUPERLEGION: NEODIAPSIDA BENTON, 1985
LEGION: ARCHOSAUROMORPHA HUENE, 1946
SUPERCOHORT: CRUROTARSI SERENO & ARCUCCI, 1990
COHORT: CROCODYLOTARSI BENTON & CLARK, 1988
MAGNORDER: SUCHIA KREBS, 1974
SUPERORDER: CROCODYLOMORPHA WALKER, 1968
GRANDORDER: CROCODILIFORMES HAY, 1930
MICRORDER: MESOEUROCROCODYLIA WHETSTONE & WHYBROW, 1983
ORDER: EUSUCHIA emend HUXLEY, 1875
INFRAORDER: CROCODYLIA emend GMELIN, 1877
PARVORDER: BREVIROSTRES
Superfamily: CROCODILOIDEA Cuvier, 1807 (sensu Fitzinger, 1826)
Family: CROCODYLIDAE Cuvier, 1807
Subfamily: CROCODYLIDINAE Cuvier, 1807
Incertae sedis
non Crocodylus, *C. marylandiscus
= Thecachampsa marylandiscus
MARYLAND
MIOCENE EPOCH
LOWER NEOGENE PERIOD
UPPER TERTIARY SUBERA
MIDDLE CENOZOIC ERA
STEM: TETRAPODA GOODRICH, 1930
SUPERCLASS: AMNIOTA HAECKEL, 1866
CLASS: REPTILIA LAURENTI, 1768
SUBCLASS: DIAPSIDA OSBORN, 1904
SUPERLEGION: NEODIAPSIDA BENTON, 1985
LEGION: ARCHOSAUROMORPHA HUENE, 1946
SUPERCOHORT: CRUROTARSI SERENO & ARCUCCI, 1990
COHORT: CROCODYLOTARSI BENTON & CLARK, 1988
MAGNORDER: SUCHIA KREBS, 1974
SUPERORDER: CROCODYLOMORPHA WALKER, 1968
GRANDORDER: CROCODILIFORMES HAY, 1930
MICRORDER: MESOEUROCROCODYLIA WHETSTONE & WHYBROW, 1983
ORDER: EUSUCHIA emend HUXLEY, 1875
INFRAORDER: CROCODYLIA emend GMELIN, 1877
Family: GAVIALIDAE Cuvier, 1807
Subfamily: THORACOSAURINAE Cope, 1875 (sensu Nopcsa, 1928)
Thecachampa antiqua
= Crocodylus sicarius
_____________________________________________________________________________________
MARYLAND
SPHENO RUN
NEW EGYPT FORMATION
MONMOUTH GROUP
LATE MAASTRICHTIAN STAGE
UPPERMOST SENONIAN SUBEPOCH
GULF EPOCH
LATE CRETACEOUS
STEM: TETRAPODA GOODRICH, 1930
SUPERCLASS: AMNIOTA HAECKEL, 1866
CLASS: REPTILIA LAURENTI, 1768
SUBCLASS: CHELONOMORPHA KUHN, 1960
SUPERCOHORT: TESTUDINES LINNAEUS, 1758
COHORT: CASICHELYDIA emend GAFFNEY & MEYLAN, 1988
MAGNORDER: PLEURODIRA GAFFNEY & MEYLAN, 1988
ORDER: PLEURODIRIDA COPE, 1864
SUBORDER: EUPLEURODIRA GAFFNEY & MEYLAN, 1988
Superfamily: PELOMEDUSOIDES Cope, 1868 Cope, 1868
Family: PELOMEDUSIDAE Cope, 1868
Subfamily: PELOMEDUSINAE Cope, 1868
Taphrosphys sulcatus
MAGANORDER: CRYPTODIRA GAFFNEY & MEYLAN, 1988
SUPERORDER: SELMACRYPTODIRA GAFFNEY, HUTCHISON, JENKINS & MEEKR, 1987
GRANDORDER: DAIOCRYPTODIRA GAFFNEY & MEYLAN, 1988
MICRORDER: CENTROCRYPTODIRA GAFFNEY & MEYLAN, 1988
ORDER: POLYCRPTODIRA GAFFNEY & MEYLAN, 1988
SUBORDER: PROCOELOCRYPTODIRA GAFFNEY & MEYLAN, 1988
INFRAORDER: CHELONOIDEA GAFFNEY & MEYLAN, 1988
Superfamily: DERMOCHELYOIDEA Willams, 1950
Family: TOXOCHELYIDAE Baur, 1895
Subfamily: LOPHOCHELYINAE Zangerl, 1953
Peritresius ornatus
SUBCLASS: DIAPSIDA OSBORN, 1903
INFRACLASS: NEODIAPSIDA BENTON, 1985
LEGION: LEPIDOSAUROMORPHA BENTON, 1983
SUBLEGION: LEPIDOSAURIA HAECKEL, 1866 (DUMERIL & BIBRON, 1839)
MAGNORDER: SQUAMATA, OPPEL, 1811
SUPERORDER: LACERTILIA OWEN, 1842
GRANDORDER: SCINCOGEKKONOMORPHA SUKHANOV, 1961
MICRORDER: SCINCOMORPHA CAMP, 1923
ORDER: ANGUIMORPHA FURBRINGER, 1900
SUBORDER: DIPLOGLOSSA COPE, 1864
INFRAORDER: THECAGLOSSA COPE, 1890
PARVORDER: MONSTERSAURIA NORELL & GAO, 1977
Superfamily: VARANOIDEA Gray, 1827 (sensu Camp, 1923)
Family: MOSASAURIDAE Gervais, 1853
Infrafamily: NATANIA
Subfamily: PLATECARPINAE Williston, 1897
Tribe: PLIOPLATECARPINI Dollo, 1884 (sensu Russell, 1967)
Prognathodon rapax
Gen. sp indet.
Subfamily: MOSASAURINAE Gervais, 1853 (sensu Williston, 1897)
Tribe: MOSASAURINI Gervais, 1853 (sensu Russell, 1967)
Mosasaurus hoffmanni
INFRACLASS: EURYAPSIDA COLBERT, 1945
SUPERORDER: SAUROPTERYGIA OWEN, 1860
GRANDORDER: EOSAUROPTERYGIA emend RIEPPEL, 1994
ORDER: PLESIOSAURIA OWEN, 1840 NON BLAINVILLE, 1835
SUBORDER: PLESIOSAURIA OWEN, 1840 NON BLAINVILLE, 1835
INFRAORDER: PLESIOSAUROMORPHA NOVA
EUPLESIOSAURIA O’KEEFE, 2001
Superfamily: CRYPTOCLEIDOIDEA Williston, 1925
TRICLEDIA O’KEEFE , 2001
Family: CIMOLIASAURIDAE Delair, 1959
Cimoliasaurus magnus
_____________________________________________________________________________________