Thoracica

Rarity: Common

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At a glance

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Knowledge cost

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Influence

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Resistance

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In collections

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What Wikipedia says

Thoracica is an infraclass of crustaceans which contains the most familiar species of barnacles found on rocky coasts, such as Semibalanus balanoides and Chthamalus stellatus. They have six well-developed limbs, and may be either stalked or sessile. The carapace is heavily calcified.

Excerpt from the Wikipedia article “Thoracica”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Stemonitis, Copyrighted free use, via Wikimedia Commons.