title: Studies on helminths of North Dakota. 8. Nematodes from the paddlefish, Polyodon spathula (Walbaum), including Thynnascaris dollfusi sp. nov. (Nematoda: Stomachidae).
mesh_terms: D000818:Animals; D005260:Female; D005393:Fish Diseases; D005399:Fishes; D008297:Male; D009348:Nematoda / Q000145:classification*; D009349:Nematode Infections / Q000662:veterinary; D009658:North Dakota