The order Ascaridida includes several families of parasitic roundworms with three `lips` on the anterior end. They were formerly placed in the subclass Rhabditia by some, but morphological and DNA sequence data rather unequivocally assign them to the Spiruria. The Oxyurida and Rhigonematida are occasionally placed in the Ascaridida as superfamil.....
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http://en.wikipedia.org/wiki/Ascaridida
(from the article `aschelminth`) ...using stylet; others, insect parasites; mostly terrestrial; characteristic hollow, slender mouth stylet; pharynx with bulb, valve, and prominent ...
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http://www.britannica.com/eb/a-z/a/110
An order of nematodes of the subclass secernentea. Its organisms possess two or three pairs of dorsolateral caudal papillae. ... (12 Dec 1998) ...
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http://www.encyclo.co.uk/local/20973
Type: Term Pronunciation: as′kă-rid′i-dă Definitions: 1. An order of nematode worms that includes many important human, domestic animal, and fowl parasites such as Ascaris, Ascaridia, Subuluris, Heterakis, and Anisakis. Synonyms: Ascaridata, Ascarididea, Ascaridorida
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http://www.medilexicon.com/medicaldictionary.php?t=7825
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