Haemonchus contortus McMaster Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Animalia phylum Nematoda class Chromadorea order Rhabditida family Trichostrongylidae genus Haemonchus species Haemonchus contortus Name Homonyms Haemonchus contortus (Rudolphi, 1803) Cobb, 1898 Haemonchus contortus Rudolphi, 1803 Haemonchus contortus McMaster