chain coral

American  

noun

1. coral of the extinct genus Halysites, from the Ordovician and Silurian periods, consisting of oval, laterally compressed corallites united to form a chainlike structure.

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Etymology

Origin of chain coral

First recorded in 1800–10

Example Sentences

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From Reuters

A third type is the chain coral, made of tubes joined in rows, single file like pickets of a fence.

From Project Gutenberg