Thelazioidea is a superfamily of spirurian nematodes in the large order Spirurida. Like all nematodes, they have neither a circulatory nor a respiratory system. Among the families placed here, only the Rhabdochonidae are notably diverse. though none is considered to be monotypic Consequently, the Thelazioidea are among the mid-sized superfamilies ...
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<zoology> A superfamily of parasitic nematodes which includes three genera: thelazia, spirocerca, and gnathostoma. Only thelazia and gnathostoma occasionally occur in man. ... (12 Dec 1998) ...
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