Family
Novitatidae Syssoiev, 1972
Aiheeseen liittyvät julkaisut
Malinky, J. M., Berg-Madsen, V. 1999. A revision of Holm's Early and Early Mid Cambrian hyoliths of Sweden. Palaeontology 42, 1, 25-65. DOI:10.1111/1475-4983.00061
List of species
2. Decoritheca affinis (Holm, 1893) | Middle Cambrian (old nomenclature)
4. Trapezotheca aemula (Holm, 1893) | Kunda Stage
5. Trapezotheca dens (Holm, 1893) | Kunda Stage
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Luokittelu
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Mollusca |
| Class | Hyolitha |
| Order | Orthothecida |
| Family | Novitatidae |
| Genus | Contitheca |
| Decoritheca | |
| Trapezotheca | |
| Family | Orthothecidae |
| Quadrothecidae |