Describe the order Graptolita
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Answer:a fossil marine invertebrate animal of the Palaeozoic era, forming mainly planktonic colonies.
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The class Graptolita belongs to the order Pterobranchia . Pterobranchia belongs to the subphylum Hemichordata. The animals belonging to the order Graptolia were marine animals. Graptotolia is an extinct class. Their tubular chitinous skeleton and colonial habits show an affinity with Rhabdopleura.
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