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Temporal range: Carboniferous–Recent
|Pinna nobilis shell and byssus|
Pinna is a genus of pen shells. It is a cosmopolitan genus of bivalve molluscs characterized by elongated, wedge-shaped shells which most commonly stand point-first in the sea bottom in which they live, anchored by a net of byssus threads.
- Pinna carnea Gmelin, 1791 — amber pen shell
- Pinna nobilis Linnaeus, 1758 — noble pen shell
- Pinna rudis
- Pinna calamitoides (extinct/fossil)
- Packard, Earl; Jones, David L. (Sep 1965). "Cretaceous Pelecypods of the Genus Pinna from the West Coast of North America". Journal of Paleontology 39 (1): 910–915.
- "Glossary". Man and Mollusc. Retrieved 2008-01-30.
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