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Classification of Parris and Echols 1992
Or. †
Ichthyornithiformes
Marsh 1873
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Fm. †
Ichthyornithidae
Marsh 1873
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G. †
Ichthyornis
Marsh 1872
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†
Ichthyornis antecessor
Wetmore 1962
†
Ichthyornis dispar
Marsh 1872