Classification of Heckert 2004

Cl. Ostracoda Latreille 1802 [ostracod]
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G. †Gerdalia Belousova 1961
Cl. Mammalia Linnaeus 1758 [mammal]
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G. †Adelobasileus Lucas and Hunt 1990
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Adelobasileus cromptoni Lucas and Hunt 1990
Fm. Sphenodontidae Cope 1869
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G. †Paleollanosaurus Heckert 2004
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Paleollanosaurus fraseri Heckert 2004
G. †Planocephalosaurus Fraser 1982
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Planocephalosaurus lucasi Heckert 2004
Or. †Ornithischia Seeley 1888 [ornithischian]
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G. †Crosbysaurus Heckert 2004
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Crosbysaurus harrisae Heckert 2004
G. †Pekinosaurus Hunt and Lucas 1994
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Pekinosaurus olseni Hunt and Lucas 1994
G. †Protecovasaurus Heckert 2004
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Protecovasaurus lucasi Heckert 2004
G. †Tecovasaurus Hunt and Lucas 1994
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Tecovasaurus murryi Hunt and Lucas 1994
Subcl. Elasmobranchii Bonaparte 1838 [elasmobranch]
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Or. †Xenacanthiformes Berg 1955
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Fm. †Xenacanthidae Fritsch 1889
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G. †Xenacanthus Beyrich 1848
Superor. Euselachii Hay 1902
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Superfm. †Hybodontoidea Zangerl 1981
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Fm. †Hybodontidae Agassiz 1843
Fm. †Lonchidiidae Herman 1977
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G. †Diplolonchidion Heckert 2004
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Diplolonchidion murryi Heckert 2004
G. †Lonchidion Estes 1964
Cl. Actinopterygii Cope 1887 [ray-finned fish]
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Halecostomi Regan 1903
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Or. †Semionotiformes Arambourg and Bertin 1958
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Fm. †Semionotidae Woodward 1890
Or. †Palaeonisciformes Hay 1902
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Fm. †Palaeoniscidae Vogt 1852
Or. †Redfieldiformes Berg 1955
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Fm. †Redfieldiidae Hutchinson 1973
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G. †Redfieldius Hay 1899
Sarcopterygii Romer 1955 [lobe-finned fish]
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Or. Coelacanthiformes Berg 1937 [coelacanth]
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Fm. Coelacanthidae Agassiz 1843
Subcl. Dipnoi Müller 1884 [lungfish]
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Fm. Ceratodontidae Gill 1872
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G. †Arganodus Martin 1979