Spirurida is an order of spirurian nematodes. Like all nematodes, they have neither a circulatory nor a respiratory system.
Some Spirurida, like the genus Gongylonema, can cause disease in humans. One such disease is a skin infection with Spirurida larvae, called "creeping disease". Some species are known as eyeworms and infect the orbital cavity of animal hosts.
| Spirurida | |
|---|---|
| |
| Dirofilaria immitis larva Magnification 400× | |
Scientific classification 
| |
| Kingdom: | Animalia |
| Phylum: | Nematoda |
| Class: | Chromadorea |
| Order: | Rhabditida |
| Suborder: | Spirurida |
| Superfamilies | |
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10, but see text | |
https://en.wikipedia.org/wiki/Spirurida
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