Triploblastica - Vertebrata

Full reference: E. Hitchcock. 1848. An attempt to discriminate and describe the animals that made the fossil footmarks of the United States, and especially of New England. Memoirs of the American Academy of Arts and Sciences, new series 3:129-256

Parent taxon: Vertebrata according to R. S. Lull 1904

Sister taxa: Agnatha, Ammopus, Apedolepis, Artenolepis, Auchenaspis, Calibarichnus, Cephalaspidomorpha, Cephalaspis, Galeaspida, Gallegosichnus, Gnathostomata, Herpetichthyes, Hypichthyes, Ingenierichnus, Larnovaspis, Myzichthyes, Pachycardia, Palaciosichnus, Palaeaspis, Pituriaspida, Rogerbaletichnus, Teleosti, Toxichnus, Trihamus

Subtaxa: Hoplichnus equus, Hoplichnus quadrupedans

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Type: Hoplichnus quadrupedans

Ecology: