Orthothecida
| Orthothecida Temporal range: Early Cambrian – Early Devonian[1] | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | incertae sedis |
| Class: | †Hyolitha |
| Order: | †Orthothecida Marek, 1966 |
The orthothecids are one of the two hyolith orders.[2]
References
- ↑ Malinky, J. M. (2009). "Permian Hyolithida from Australia: The Last of the Hyoliths?". Journal of Paleontology. 83: 147–152. doi:10.1666/08-094R.1.
- ↑ Malinky, J.M.; Skovsted, C.B (2004). "Hyoliths and small shelly fossils from the Lower Cambrian of North−East Greenland". Acta Palaeontologica Polonica. 49 (4): 551–578.
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