Oymurania
Oymurania is an organophosphatic Cambrian small shelly fossil interpreted as a stem-group Brachiopod. It consists of a pair of Micrina-like shells that broadly follow a logarithmic coiling trajectory with a high rate of expansion.[1]
| Oymurania | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Clade: | Lophophorata |
| Stem group: | Brachiopoda |
| Informal group: | †Tommotiids |
| Informal group: | †Tannuolinids (?) |
| Genus: | †Oymurania Kouchinsky et al. 2014[1] |
Microstructure
Its shell comprises an inner prismatic layer, with hexagonal prisms that run through the full depth of the layer, and an outer layer that contains an acrotretid-like microstructure of surface-parallel laminae punctuated by pore-bearing rod-like columns.[2]
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References
- Kouchinsky, Artem; Holmer, Lars; Ushatinskaya, Galina; Steiner, Michael (2014). "The new stem-group brachiopod Oymurania from the lower Cambrian of Siberia". Acta Palaeontologica Polonica. doi:10.4202/app.00037.2013. ISSN 0567-7920.
- Acta Palaeontol. Pol. 62 (1): 39–43, 2017 https://doi.org/10.4202/app.00320.2016
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