Parahesperornis alexi

Cladus: Eukaryota
Supergroup: Opisthokonta
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Deuterostomia
Phylum: Chordata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Superclassis: Tetrapoda
Classis: Aves
Subclassis: † Odontornithes
Infraclassis: Odontoholcae
Magnordo: Hesperornithes
Ordo: Hesperornithiformes
Familia: Hesperornithidae
Subfamilia : Hesperornithinae
Genus: Parahesperornis
Species: P. alexi

Name

Parahesperornis alexi L.D. Martin, 1983