Cephalodiscus

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Cephalodiscus

invertebrate genus

Learn about this topic in these articles:

characteristics

In pterobranch
Two of them, Rhabdopleura and Cephalodiscus, live in secreted tubes, organized into a colonial structure called a coenecium. The third genus, Atubaria, lives on hydroids. All three genera are rare. About 21 species have been described.
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exoskeleton

In skeleton: Crystals
>Cephalodiscus. Some graptolites, known only from fossil skeletal remains many millions of years old, had skeletons similar to those of Rhabdopleura.
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