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date: 27 January 2020

Acanthocephala (thorny-headed worms) 

A Dictionary of Ecology

Michael Allaby

A phylum of bilaterally symmetrical, worm-like organisms most of which do not have an excretory system; all lack a gut. A retractable proboscis is present, covered with the recurved spines that give the animals their common name. All acanthocephalans are endoparasitic (... ...

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