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Dictionary of invertebrate zoology
( A B C D E F J H I j K L M N O P Q R S T U V W X Y Z
acanthocephalans

n.; n. pl. [Gr. akantha, thorn, spine; kephale, head]
A phylum of parasitic pseudocoelomate, bilateral animals distinguished by a generally eversible proboscis with recurved, sclerotized, retractable hooks; commonly called spiny-headed worms; acanthocephalous adj..


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