The Ascarididae are a family of the large intestinal roundworms. Members of the family are intestinal parasites, infecting all classes of vertebrates. It includes a number of genera, the most well known of which are: \n* Amplicaecum \n* Angusticaecum \n* Ascaris \n* †Ascarites (fossil) \n* Baylisascaris \n* Crossophorus \n* Dujardinascaris \n* Hexametra \n* Lagaochilascaris \n* Ophidascaris \n* Parascaris \n* Polydelphis \n* Seuratascaris \n* Toxascaris \n* Toxocara \n* Travassoascaris Ascaris lumbricoides is the main ascarid parasite of humans, causing Ascariasis.