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Scientific nameCommon nameStatus
HesperornithiformesHesperornithiformeshigher-level taxonomy
PotamornisPotamornis sp.fossil genus (extinct)
Potamornis skutchifossil species (extinct)
Chupkaornisfossil genus (extinct)
Chupkaornis keraorumfossil species (extinct)
HesperornithidaeHesperornithidaehigher-level taxonomy
CanadagaCanadaga sp.fossil genus (extinct)
Canadaga arcticafossil species (extinct)
ConiornisConiornis sp.fossil genus (extinct)
HesperornisHesperornis sp.fossil genus (extinct)
Hesperornis altusfossil species (extinct)
Hesperornis bairdifossil species (extinct)
Hesperornis chowifossil species (extinct)
Hesperornis crassipesfossil species (extinct)
Hesperornis gracilisfossil species (extinct)
Hesperornis macdonaldifossil species (extinct)
Hesperornis mengelifossil species (extinct)
Hesperornis montanafossil species (extinct)
Hesperornis regalisMarsh Hesperornisfossil species (extinct)
Hesperornis rossicusfossil species (extinct)
Hesperornis lumgairifossil species (extinct)
LestornisLestornis sp.fossil genus (extinct)
ParahesperornisParahesperornis sp.fossil genus (extinct)
Parahesperornis alexifossil species (extinct)
Fumicollisfossil genus (extinct)

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