Subclass
Endoceratoidea Teichert, 1933
Selection of related publications
Kröger, B. 2025. The Lyckholm acme of cephalopods – Review of the late Katian (Vormsi–Pirgu regional stages) Ordovician cephalopods of Estonia.  European Journal of Taxonomy   978,      1-169. DOI:10.5852/ejt.2025.978.2801
Stumbur, H. 1955. Eesti NSV ülem-ordoviitsiumi nautiloiididest [Diplomitöö. Juhendaja: A. Rõõmusoks]. pp. 1-159.
Classification
| Organism group | Biota | 
| Kingdom | Animalia | 
| Phylum | Mollusca | 
| Class | Cephalopoda | 
| Subclass | Actinoceratoidea | 
| Ammonoidea | |
| Bactritoidea | |
| Coleoidea | |
| Endoceratoidea | |
| Order | Endocerida | 
| Subclass | Multiceratoidea | 
| Nautilia | |
| Orthoceratia | |
| Tarphyceratia | |
| Order | Bactritida | 
| Barrandeocerida | |
| Basslerocerida | |
| Superfamily | Tainoceratoidea | 
| Genus | Botellusoceras | 
| Phylloceras | 
 See also