Classification of Leidy 1873
Cl. Reptilia Laurenti 1768 [reptile]
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Or. Chelonia Latreille 1800 [turtle]
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G. †Baena Leidy 1870
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G. †Baptemys Leidy 1870
Fm. Emydidae Rafinesque 1815
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G. Emys Dumeril 1806 [pond turtle]
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†Emys petrolei Leidy 1868
†Emys wyomingensis Leidy 1870
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Invalid names: Emys haydeni Leidy 1870 [synonym], Emys jeanesi Leidy 1870 [synonym], Emys stevensonianus Leidy 1870 [synonym]
Fm. Testudinidae Batsch 1788
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G. Testudo Linnaeus 1758
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†Testudo nebrascensis Leidy 1851
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Invalid names: Emys culbertsonii Leidy 1852 [synonym], Emys hemispherica Leidy 1851 [synonym], Emys oweni Leidy 1851 [synonym]
†Testudo niobrarensis Leidy 1858
†Testudo oregonensis Leidy 1872
Fm. Trionychidae Gray 1825 [softshell turtle]
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Invalid names: Sphargididae Gray 1825 [empty]
Or. Crocodilia Owen 1842 [crocodilian]
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G. Crocodilus Laurenti 1768 [crocodile]
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†Crocodilus aptus Leidy 1869
†Crocodilus elliottii Leidy 1871
Or. Dinosauria Owen 1842 [dinosaur]
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G. †Poicilopleuron Eudes-Deslongchamps 1837
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†Poicilopleuron bucklandi Eudes-Deslongchamps 1837
†Poicilopleuron valens Leidy 1870
Invalid names: Antrodemus Leidy 1873 [synonym]
Or. Lacertilia Owen 1842 [lizard]
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Or. †Sauropterygia Owen 1859
Invalid names: Mosasauria [empty]
G. †Protostega Cope 1871
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†Protostega gigas Cope 1871
†Protostega tuberosa Cope 1872
Cl. Mammalia Linnaeus 1758 [mammal]
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Or. Artiodactyla Owen 1848 [even-toed ungulate]
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Subor. Omnivora
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Fm. †Anthracotheridae Leidy 1869 [anthracothere]
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G. †Elotherium Pomel 1847
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†Elotherium imperator Leidy 1873
†Elotherium lentus Marsh 1871
†Elotherium mortoni Leidy 1850
†Elotherium superbum Leidy 1868
Invalid names: Archaeotherium Leidy 1850 [synonym], Entelodon Aymard 1846 [synonym]
G. †Microsyops Leidy 1872
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Fm. Suidae Gray 1821 [pig]
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Subor. Ruminantia Scopoli 1777 [ruminant]
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Fm. Bovidae Gray 1821 [antelope]
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Fm. Camelidae Gray 1821 [camel]
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G. †Procamelus Leidy 1858
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†Procamelus gracilis Leidy 1858
†Procamelus occidentalis Leidy 1858
†Procamelus robustus Leidy 1858
†Procamelus virginiensis Leidy 1873
Fm. Cervidae Gray 1821 [deer]
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Fm. †Oreodontidae Leidy 1869
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G. †Merycochoerus Leidy 1858
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†Merycochoerus proprius Leidy 1858
†Merycochoerus rusticus Leidy 1870
G. †Oreodon Leidy 1851
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†Oreodon affinis Leidy 1869
†Oreodon bullatus Leidy 1869
†Oreodon culbertsoni Leidy 1848
†Oreodon hybridus Leidy 1869
†Oreodon major Leidy 1853
†Oreodon superbus Leidy 1870
Invalid names: Merycoidodon Leidy 1848 [synonym]
Or. Carnivora Bowdich 1821 [carnivoran]
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Fm. Canidae Fischer de Waldheim 1817 [canid]
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G. Canis Linnaeus 1758 [canine]
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†Canis haydeni Leidy 1858
†Canis occidentalis Richardson 1829
†Canis saevus Leidy 1858
†Canis vafer Leidy 1858
Fm. Felidae Gray 1821 [cat]
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Fm. Mustelidae Fischer 1817 [mustelid carnivore]
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G. †Uintacyon Leidy 1873
Or. Cetacea Brisson 1762 [whale]
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Or. Insectivora Bowdich 1821 [insectivoran]
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Or. Perissodactyla Owen 1848 [odd-toed ungulate]
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Subor. †Solidungula Cuvier
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G. †Anchippodus Leidy 1868
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†Anchippodus vetulus Leidy 1871
Invalid names: Trogosus Leidy 1871 [synonym]
Fm. †Anchitheridae Leidy 1869 [anchitheriine horse]
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G. †Anchitherium von Meyer 1844
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†Anchitherium agreste Leidy 1873
†Anchitherium aurelianense Cuvier 1825
†Anchitherium australe Leidy 1873
†Anchitherium bairdi Leidy 1850
†Anchitherium condoni Leidy 1870
†Anchitherium parvulus Marsh 1868
G. †Hyrachyus Leidy 1871
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†Hyrachyus agrarius Leidy 1871
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Invalid names: Hyrachyus agrestis Leidy 1871 [synonym], Lophiodon bairdianus Marsh 1871 [synonym]
†Hyrachyus eximius Leidy 1871
†Hyrachyus modestus Leidy 1870
†Hyrachyus nanus Marsh 1871
Fm. Equidae Gray 1821 [horse]
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G. Equus Linnaeus 1758 [horse]
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†Equus occidentalis Leidy 1865
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Invalid names: Equus excelsus Leidy 1858 [synonym], Equus pacificus Leidy 1868 [synonym]
Fm. Rhinocerotidae Gray 1821 [rhinoceros]
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G. Rhinoceros Linnaeus 1758 [one-horned rhinoceros]
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†Rhinoceros crassus Leidy 1858
†Rhinoceros hesperius Leidy 1865
Or. Proboscidea Illiger 1811 [proboscidean]
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G. Elephas Linnaeus 1758 [elephant]
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†Elephas americanus De Kay 1842
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Invalid names: Elephas columbi Falconer 1857 [synonym], Elephas imperator Leidy 1858 [synonym], Elephas jacksoni Mather 1838 [synonym], Elephas texianus Owen 1858 [synonym]
G. †Mastodon Cuvier 1817
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†Mastodon americanus Kerr 1792 [American mastodon]
†Mastodon andium Cuvier 1805
†Mastodon angustidens Cuvier 1806
†Mastodon longirostris Kaup 1832
†Mastodon mirificus Leidy 1858
G. †Megacerops Leidy 1870
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†Megacerops coloradensis Leidy 1870
Invalid names: Megaceratops Cope 1873 [synonym]
G. †Uintatherium Leidy 1872
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†Uintatherium robustum Leidy 1872
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Invalid names: Dinoceras mirabilis Marsh 1872 [synonym], Uintamastix atrox Leidy 1872 [synonym]
Invalid names: Dinoceras Marsh 1872 [synonym], Eobasileus Cope 1872 [synonym], Loxolophodon Cope 1872 [synonym], Tinoceras Marsh 1872 [synonym], Uintamastix Leidy 1872 [synonym]
Or. Rodentia Bowdich 1821 [rodent]
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Fm. Muridae Illiger 1811 [mouse]
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Fm. Sciuridae Gray 1821 [squirrel]
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G. †Paramys Leidy 1871
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†Paramys delicatior Leidy 1871
†Paramys delicatissimus Leidy 1871
†Paramys delicatus Leidy 1871
Or. †Zeuglodontia Pictet 1853
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Subor. †Sauropterygia Owen 1859
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G. †Merychyus Leidy 1858
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†Merychyus elegans Leidy 1858
†Merychyus major Leidy 1858
†Merychyus medius Leidy 1858
G. †Megalonyx Harlan 1825
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†Megalonyx jeffersoni Desmarest 1822 [Jefferson's ground sloth]
Subcl. Teleostei Müller 1846
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Fm. Clupeidae Cuvier 1817 [herring]
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Fm. Cyprinidae Rafinesque 1815
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Invalid names: Malacopteri [empty]
Cl. Elasmobranchii Bonaparte 1838 [elasmobranch]
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Unr. †Ichthyodorulites Buckland
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Or. †Plagiostomi Cuvier
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Fm. Cestraciontidae Bonaparte 1838 [bullhead shark]
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G. †Petalodus
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†Petalodus alleghaniensis Leidy 1856
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Invalid names: Petalodus destructor Newberry and Worthen 1870 [synonym], Sicarius extinctus Leidy 1856 [synonym]
G. †Ptychodus Agassiz 1834
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†Ptychodus altior Agassiz 1835
†Ptychodus mortoni Mantell 1836
†Ptychodus occidentalis Leidy 1868
†Ptychodus whippleyi Marcou 1858
Fm. †Hybodontidae Agassiz 1834
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G. †Cladodus Agassiz 1843
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†Cladodus mortifer Newberry and Worthen 1866
†Cladodus occidentalis Leidy 1859
Fm. Squalidae Bonaparte 1834 [dogfish shark]
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G. Galeocerdo Müller and Henle 1837 [tiger shark]
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†Galeocerdo falcatus Agassiz 1843
Invalid names: Corax Agassiz 1843 [synonym]
G. Lamna Cuvier 1816 [mackerel shark]
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†Lamna acuminata Agassiz 1835
†Lamna cuspidata Agassiz 1843
†Lamna elegans Agassiz 1838
†Lamna texana Roemer 1852
Invalid names: Raiae [empty]
Superor. Ganoidei Agassiz
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Or. Cycloganoidei
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G. Amia Linnaeus 1766 [bowfin]
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†Amia gracilis Leidy 1873
†Amia media Leidy 1873
†Amia uintaensis Leidy 1873
Invalid names: Placoganoidei [empty], Rhomboganoidei [empty]