Eumetazoa - Triploblastica

Full reference: J. -B. Lamarck. 1801. Système des Animaux sans Vertèbres, ou Tableau général des classes, des ordres et des genres de ces animaux. 8:1-432

Parent taxon: Chordata according to P. C. J. Donoghue and M. P. Smith 2001

Sister taxa: Cephalochordata, Metaspriggina, Pikaia, Tunicata, Undichna, Urochordata

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

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Ecology: