MARYLAND
PRINCE GEORGES COUNTY
NASA/GODDARD SPACE FLIGHT CENTER
PATUXENT FORMATION
POTOMAC GROUP
UPPER APTIAN STAGE
MIDDLE GALLIC SUBEPOCH
UPPER EARLY CRETACEOUS EPOCH
EARLY CRETACEOUS
ICHNOSTEM: TETRAPODIPIDA NOVA
ICHNOSUPERCLASS: AMNIOTAIPIDII NOVA
ICHNOCLASS: REPTILIPEDIA VIALOV, 1966
ICHNOSUBCLASS: DIAPSIDIPIDII 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
cf. Pteraichnus
ICHNOLEGION: DINOSAUROMORPHIPEDA NOVA
ICHNOSUBLEGION: DINOSAURIFORMEIPEDIDII NOVA
ICHNOSUPERCOHORT: DINOSAUROPEDIDA NOVA
ICHNOCOHORT: THEROPODIPEDIA NOVA
Incertae sedis
Gen. sp indet.
ICHNOSUPERORDER: NEOTHEROPODOPEDIDA NOVA
ICHNOORDER: NEOTETANURIPEDIDII NOVA
ICHNOSUBORDER: AVETHEROPODIPIDA NOVA
ICHNOMICRORDER: COELUROSAURIPIDIDA NOVA
Ichnofamily: GRALLATORIDAE emend Lull, 1904
Grallator sp
ICHNOCOHORT: ORNITHISCHIFORMEIPIDA NOVA
ICHNOSUPERORDER: SAUROPODOMORPHIPIDA NOVA
Ichnoorder: SAUROPODINA emend Vylov, 1988
cf. Brontopodus sp
ICHNOMAGNORDER: ORNITHISCHIPIDA NOVA
ICHNOSUPERORDER: NEORNITHISCHIPIDA NOVA
ICHNOGRANDORDER: ORNITHOPODIPDIA NOVA
ICHNOMICRORDER: EUORNITHOPODIPIDA NOVA
ICHNOORDER: HYPSILOPHODONIPEDII NOVA
Ichnofamily: HYPSILOPHODONIPODIDAE Nova
Hypsiloichnus sp
ICHNOSUPERORDER: EURYOPDIPIDA NOVA
ICHNOGRANDORDER: ANKYLOSAURIFORMIPIDA NOVA
Ichnofamily: TETRAPODOSAURIDAE emend Sternberg, 1932
cf Tetrapodosaurus sp
ICHNOCLASS: MAMMALIPIDA NOVA
Incertae sedis
Sederipes goddarensis (Morphotype A)
Morphotype B
Morphotype C
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MARYLAND
PRINCE GEORGE’S COUNTY
DINOSAUR PARK (OPEN PIT CLAY MINE NEAR MUIRKIRK)
USNM LOCALITY 41614 (MUIRKIRK, HOTTON LOCALITY)
ARUNDEL FORMATION
POTOMIC 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: CHELONOMORPHA KUHN, 1960
SUPERCOHORT: TESTUDINES LINNAEUS, 1758
Incertae sedis
Gen. sp indet.
COHORT: CASICHELYDIA emend GAFFNEY & MEYLAN, 1988
MAGANORDER: CRYPTODIRA GAFFNEY & MEYLAN, 1988
Incertae sedis
*Arundelemys dardeni
ORDER: CRYPTODIRA COPE, 1868
Family: SOLEMYDIDAE Lapparent & Murelaga, 1997
Naomichelys sp
SUPERORDER: SELMACRYPTODIRA GAFFNEY, HUTCHISON, JENKINS & MEEKR, 1987
GRANDORDER: PLEUROSTERNOIDEA GAFFNEY & MEYLAN, 1988
Superfamily: PLEUROSTERNIDEA Cope, 1868 (sensu Hay, 1893)
Family: PLEUROSTERNIDAE Cope, 1868
Incertae sedis
Non Glyptops, *G. caelatus
SUBCLASS: DIAPSIDA OSBORN, 1903
INFRACLASS: 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: METAMESOSUCHIA HULKE, 1878
NEOSUCHIA CLARK, IN BENTON & CLARK, 1988
Family: BERNISSARTIIDAE Dollo, 1883
Incertae sedis
Gen. sp indet
Family: GONIOPHOLIDIDAE Cope, 1875
Incertae sedis
Gen. sp indet
Family: PHOLIDOSAURIDAE Williston, 1902
Incertae sedis
Gen sp indet.
LEGION: ARCHOSAUROMORPHA HUENE, 1946
SUBLEGION: DINOSAUROMORPHA BENTON & NORMAN IN BENTON, 1985
INFRALEGION: DINOSAURIFORMES NOVAS, 1992
SUPERCOHORT: DINOSAURIA OWEN, 1842
COHORT: THEROPODA EMEND MARSH, 1881
Incertae sedis
“Capitalsaurus"
aff. Ricardoestesia sp
Gen. sp indet.
AVEPODA PAUL, 2002
SUPERORDER: NEOTHEROPODA BAKKER, 1986
GRANDORDER: TETANURAE GAUTHIER, 1986
ORDER: NEOTETANURAE SERENO, WILSON, LARSSON, DUTHEIL &
SUBORDER: AVETHEROPODA PAUL, 1988
Superfamily: ALLOSAUROIDEA Marsh, 1878 (sensu Currie & Zhao, 1994)
Family: CARCHARODONTOSAURIDAE Stromer, 1931
Acranthosaurus cf. A. atokensis
Acrocanthosaurus sp*Dryptosaurus?medius = Allosaurus medius
= Antrodemus mediusMICRORDER: COELUROSAURIA HUENE, 1914
ORDER: MANIRAPTORFORMES HOLTZ, 1996
AVETHEROPODA PAUL, 2002
AVEPECTORA PAUL, 2002
SUBORDER: ORNITHOMIMOSAURIA BARSBOLD, 1976
Family: ORNITHOMIMIDAE Marsh, 1890
Incertae sedis
non Archaeornithomimus, *A? affinis
= *Dryosaurus grandisGen. sp indet.
SUBORDER: MANIRAPTORA GAUTHIER, 1986
INFRAORDER: PARVES SERENO, 1997
PARVORDER: DEINONYCHOSAURIA COLBERT & D. A. RUSSELL, 1969
Family: DROMAEOSAURIDAE Russell, 1969
Incerate sedis
non Dromaeosaurus, *D? gracilis
Subfamily: VELOCIRAPTORINAE Barsbold, 1978
Deinonychus sp
COHORT: ORNITHISCHIFORMES COOPER, 1985
SUPERORDER: SAUROPODOMORPHA HUENE, 1932
GRANDORDER: BRONTOSAURIA OLSHEVSKY, 1991 (emend)
MICRORDER: SAUROPODA MARSH, 1878
ORDER: EUSAUROPODA
SUBORDER: NEOSAUROPODA BONAPARTE, 1986
INFRAORDER: MACRONARIA WILSON & SERENO, 1998
PARVORDER: TITANOSAURIFORMES SALGADO ET AL, 1997
Family: BRACHIOSAURIDAE Riggs, 1904
Incertae sedis
*Astrodon johnstoni
= Astrodonius jonhstoni*Pleurocoelus nanus
= Astrodon nanus
= *Pleurocoelus altus
= Astrodon altusMAGNORDER: ORNITHISCHIA SEELEY, 1888
SUPERORDER: NEORNITHISCHIA COOPER, 1985
GRANDORDER: ORNITHOPODA MARSH, 1871
MICRORDER: MARGINOCEPHALIA SERENO, 1986
ORDER: CERATOPIA MARSH, 1890
SUBORDER: NEOCERATOPIA SERENO, 1986
INFRAORDER: CORONOSAURIA SERENO, 1986
PARVORDER: CERATOPOMORPHA Wolfe & Kirkland, 1998 (emend)
Superfamily: CERATOPOIDEA Marsh, 1888 (sensu Hay, 1902)
Incertae sedis
*Magulodon muirkirkensis
Gen. sp indet.
SUPERORDER: EURYOPDA SERENO, 1986
GRANDORDER: ARMATOSAURIA ZHAO, 1983 (emend)
ORDER: ANKYLOSAURIA OSBORN, 1923
SUBORDER: SCELIDOSAURIA COOPER, 1985
INFRAORDER: ANKYLOSAURA OSBORN, 1923
Family: NODOSAURIDAE Marsh, 1890
Priconodon crassus
Gen. sp indet.
CLASS: MAMMALIA LINNAEUS, 1758
SUBCLASS: THERIIFORMES (ROWE, 1988) McKENNA & BELL, 1997
INFRACLASS: ALLOTHERIA (MARSH, 1880) McKENNA & BELL, 1997
ORDER: MULTITUBERCULATA COPE, 1884
SUBORDER: PLAGIAULACOIDEA (SIMPSON, 1925) HAHN, 1969
Family: PLAGIAULACIDAE Gill, 1872
Subfamily: PLAGIAULACINAE Gill, 1872
Family: incertae sedis
*Argillomys marylandensis
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MARYLAND
PRINCE GEORGE’S COUNTY
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
ORDER: Incertae sedis
Gen. sp indet.
COHORT: ORNITHISCHIFORMES COOPER, 1985
SUPERORDER: SAUROPODOMORPHA HUENE, 1932
Incertae sedis
Gen. sp indet.
MAGNORDER: ORNITHISCHIA SEELEY, 1888
Incertae sedis
Gen. sp indet.
SUPERORDER: EURYOPDA SERENO, 1986
GRANDORDER: ARMATOSAURIA ZHAO, 1983 (emend)
ORDER: ANKYLOSAURIA OSBORN, 1923
SUBORDER: SCELIDOSAURIA COOPER, 1985
INFRAORDER: ANKYLOSAURA OSBORN, 1923
Family: NODOSAURIDAE Marsh, 1890
Priconodon crassus
= Stegosaurus crassus_____________________________________________________________________________________
MARYLAND
PRINCE GEORGE’S COUNTY
BRANCHVILLE
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
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: METAMESOSUCHIA HULKE, 1878
NEOSUCHIA CLARK, IN BENTON & CLARK, 1988
Family: GONIOPHOLIDIDAE Cope, 1875
Incertae sedis
non Goniopholis, *G. affinis
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MARYLAND
PRINCE GEORGE’S COUNTY
LAUREL
JESSOP POLICE BARRACKS
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: ORNITHISCHIFORMES COOPER, 1985
MAGNORDER: ORNITHISCHIA SEELEY, 1888
SUPERORDER: NEORNITHISCHIA COOPER, 1985
GRANDORDER: ORNITHOPODA MARSH, 1871
MICRORDER: EUORNITHOPODA SERENO, 1986
ORDER: IGUANODONTIA DOLLO, 1888
Family: TENONTOSAURIDAE nova
Tenontosaurus sp
_____________________________________________________________________________________MARYLAND
PRINCE GEORGES COUNTY
MUIRKIRK
USNM LOCALITY 41615
ARUNDEL CLAY FACIES
ARUNDEL FORMATION
POTOMIC GROUP
UPPER APTIAN-LOWER ALBIAN STAGE
MIDDLE GALLIC SUBEPOCH
UPPER EARLY CRETACEOUS EPOCH
EARLY CRETACEOUS
STEM: TETRAPODA GOODRICH, 1930
SUPERCLASS: AMNIOTA HAECKEL, 1866
CLASS: MAMMALIA LINNAEUS, 1758
SUBCLASS: PROTOTHERIA GILL, 1872
INFRACLASS: TRICONODONTA OSBORN, 1888
ORDER: TRICONODONTIA, OSBORN, 1888
Family: TRICONODONTIDAE MARSH, 1887
Subfamily: ALTICONODONTINAE Fox 1976
*Arundelconodon hottoni
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MARYLAND
PRINCE GEORGE COUNTY
SWAMPOODLE
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: ORNITHISCHIFORMES COOPER, 1985
MAGNORDER: ORNITHISCHIA SEELEY, 1888
SUPERORDER: EURYOPDA SERENO, 1986
GRANDORDER: ARMATOSAURIA ZHAO, 1983 (emend)
ORDER: ANKYLOSAURIA OSBORN, 1923
SUBORDER: SCELIDOSAURIA COOPER, 1985
INFRAORDER: ANKYLOSAURA OSBORN, 1923
Family: NODOSAURIDAE Marsh, 1890
*Priconodon crassus
= Stegosaurus crassus
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