Genus
Cyrtorizoceras Hyatt, 1900
Aiheeseen liittyvät julkaisut
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
List of species
2. Cyrtorizoceras tenue Strand, 1934 | Ordovician
3. Cyrtorizoceras thorsundi Kröger, 2013 | Katian
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Luokittelu
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Mollusca |
| Class | Cephalopoda |
| Subclass | Multiceratia |
| Order | Oncocerida |
| Family | Oncoceratidae |
| Genus | Beloitoceras |
| Cyrtorizoceras | |
| Species | borni |
| minneapolis | |
| tenue | |
| thorsundi | |
| Genus | Dalecarlioceras |
| Neumatoceras | |
| Oncoceras | |
| Oocerina | |
| Paramiamoceras | |
| Retizitteloceras | |
| Richardsonoceras | |
| Richardsonoceroides |
See also