Subclass
Cephalodiscida Fowler, 1892
Selection of related publications
Öpik, A. 1930. Beiträge zur Kenntnis der Kukruse-(C2-C3-)Stufe in Eesti. IV. Tartu Ülikooli Geoloogia Instituudi Toimetused 24, 1-34.
List of species
2. Pterobranchites antiquus Kozłowski, 1967 | Tremadocian
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Klassificering
Organism group | Biota |
Kingdom | Animalia |
Phylum | Hemichordata |
Class | Pterobranchia |
Subclass | Cephalodiscida |
Family | Cephalodiscidae |
Subclass | Graptolithina |