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| Url | https://www.unio.lu/news/18078/ |
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| MetaTitle | Age determination of Unio crassus - Thick shelled river mussel Life UNIO / Natura 2000 |
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| MetaDescription | Age determination of Unio crassus. Thick shelled river mussel Life UNIO / Natura 2000 |
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Diagram showing
the relationship between age (from thin sections including estimations of the eroded umbonal part) and shell length in *U. crassus* from river Sauer (Luxembourg and Belgium populations) and river Our (Luxembourg population).

- [![Age UC - Age determination of Unio crassus](/thumbnails/55298-212-0-Max.jpg)](/files/55298.jpg "Age UC - Age determination of Unio crassus")