Genus
Tragoceras Remelé, 1890
Aiheeseen liittyvät julkaisut
Pohle, A., Klug, C., Toom, U., Kröger, B. 2019. Conch structures, soft-tissue imprints and taphonomy of the Middle Ordovician cephalopod Tragoceras falcatum from Estonia. Fossil Imprint 75, 1, 70-78. DOI:10.2478/if-2019-0006
Mutvei, H., Dunca, E. 2011. Siphuncular structure in the orders Tarphycerida and Barrandeocerida (Cephalopoda: Nautiloidea). Palaeontology 54, 3, 705-710. DOI:10.1111/j.1475-4983.2011.01041.x
Mutvei, H. 1957. On the relations of the principal muscles to the shell in Nautilus and some fossil nautiloids. Arkiv för Mineralogi och Geologi 2, 10, 219-259.
Balashov, Z. G. 1953. Svernutye i polusvernutye nautiloidei ordovika Pribaltiki. Trudy Vsesoûznogo Naučno-Issledovatel'skogo Geologo-Razvedočnogo Instituta (VNIGRI) 217-300. Gostoptehizdat.
List of species
1. Tragoceras arciforme (Balashov, 1953) | Kunda Stage
2. Tragoceras falcatus (Schlotheim, 1820) | Kunda Stage
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Luokittelu
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Mollusca |
| Class | Cephalopoda |
| Subclass | Tarphyceratia |
| Order | Tarphyceratida |
| Family | Estonioceratidae |
| Genus | Aethoceras |
| Aphetoceras | |
| Aserioceras | |
| Bentoceras | |
| Clytoceras | |
| Eichwaldoceras | |
| Estonioceras | |
| Falcilituites | |
| Pakrioceras | |
| Planctoceras | |
| Pycnoceras | |
| Shumardoceras | |
| Tragoceras | |
| Species | arciforme |
| falcatus |