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Shell of the Week: The Disk Dosinia

  • Writer: José H. Leal
    José H. Leal
  • May 29, 2020
  • 1 min read

Last week, we examined the Elegant Dosinia, Dosinia concentrica. Today I want to introduce its closest relative, Dosinia discus (Reeve, 1850). The two species have shells that are very similar in size (about 2.75–3 inches), in their circular shape, and white color, but the Disk Dosinia differs from its “sister species,” above all, by having twice as many commarginal (“concentric”) ridges, about 16–20 per centimeter (40–48 per inch).


The Disk Dosinia, Dosinia discus, from Sanibel. Photos by José H. Leal.
 
 
 

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Henry Green
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Apr 17

It's fascinating to learn about the subtle differences between Dosinia concentrica and Dosinia discus. The number of commarginal ridges seems to be a key distinguishing feature, with the Disk Dosinia having significantly more, which could potentially influence its texture and strength. Understanding such nuances in species helps deepen our appreciation of biodiversity. Similarly, just as in biology, attention to detail is crucial in other fields, like when utilizing a Homework Writing Service to ensure precise, high-quality results. These small distinctions, whether in shells or academic work, make all the difference in the final outcome.

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