title: Nomenclature and morphology of Ostertagia trifurcata Ransom, 1907, with data on spicule lengths of five stomach worms of ruminants.
mesh_terms: D000818:Animals; D001188:Artiodactyla; D002417:Cattle; D006041:Goats; D049673:History, 20th Century; D008297:Male; D012417:Rumen; D012756:Sheep; D012757:Sheep Diseases / Q000175:diagnosis*; D014251:Trichostrongyloidea / Q000033:anatomy & histology* / Q000145:classification*; D014252:Trichostrongyloidiasis / Q000175:diagnosis / Q000662:veterinary*