Catenulida

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

Catenulida is an order of flatworms in the classical classification, or a class of flatworms in a phylogenetic approach. They are relatively small free-living flatworms, inhabiting freshwater and marine environments.

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

Image: Christopher Laumer, CC BY 2.0, via Wikimedia Commons.