perekond
Cyrtorizoceras Hyatt, 1900
Valik taksonit käsitlevast teaduskirjandusest
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
Kröger, B. 2013. The cephalopods of the Boda Limestone, Late Ordovician, of Dalarna, Sweden.  European Journal of Taxonomy   41,   41,   1-110. DOI:10.5852/ejt.2013.41
Teichert, C. 1930. Die Cephalopoden-Fauna der Lyckholm-Stufe des Ostbaltikums.  Paläontologische Zeitschrift   12,   3/4,   264-312. DOI:10.1007/BF03044452
Leitud liigid
2. Cyrtorizoceras hariense Kröger, 2025 | Vormsi lade
3. Cyrtorizoceras tenue Strand, 1934 | Ordoviitsium
4. Cyrtorizoceras thorsundi Kröger, 2013 | Katy lade
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Klassifikatsioon
| organismirühm | Biota | 
| riik | Animalia | 
| hõimkond | Mollusca | 
| klass | Cephalopoda | 
| alamklass | Multiceratoidea | 
| selts | Oncocerida | 
| sugukond | Oncoceratidae | 
| perekond | Beloitoceras | 
| Cyrtorizoceras | |
| liik | borni | 
| hariense | |
| minneapolis | |
| tenue | |
| thorsundi | |
| perekond | Dalecarlioceras | 
| Neumatoceras | |
| Oncoceras | |
| Oocerina | |
| Paramiamoceras | |
| Retizitteloceras | |
| Richardsonoceras | |
| Richardsonoceroides | |
| Rizosceras | 
 See also