Oelandia
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For Öland, see Öland.
| Oelandia Temporal range: Middle Cambrian |
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Scientific classification  |
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| Kingdom: | Animalia |
| Phylum: | Mollusca |
| (unranked): | incertae sedis |
| Class: | †Helcionelloida |
| Order: | †Helcionelliformes |
| Superfamily: | †Helcionelloidea |
| Genus: | †Oelandia Westergård, 1936 |
Oelandia is a genus of helcionellid from the Middle Cambrian of Sweden, China and North America.[1] It has a small , upwards-pointing anterior snorkel with a closed end. It bears pronounced concentric ribbing around its strongly-coiled exogastric shell.[1]
[edit] References
- ^ a b Peel, JS (1991). "Functional morphology of the Class Helcionelloida nov., and the early evolution of the Mollusca". In Simonetta, AM; Conway Morris, S. The early evolution of Metazoa and the significance of problematic taxa. Cambridge University Press. pp. 157–177. ISBN 978-0-521-40242-2.
