Thelazioidea is a superfamily of

spiruria Subclass Spiruria comprises mostly parasitic secernentean nematodes. In an alternate classification, they are treated as suborder Spirurina, with the orders listed here being ranked as infraorders. The Ascaridida and the Oxyurida, which include ...

n nematodes in the large order

Spirurida 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 w ...

. Like all nematodes, they have neither a

circulatory The blood circulatory system is a system of organs that includes the heart, blood vessels, and blood which is circulated throughout the entire body of a human or other vertebrate. It includes the cardiovascular system, or vascular system, tha ...

nor a

respiratory system The respiratory system (also respiratory apparatus, ventilatory system) is a biological system consisting of specific organs and structures used for gas exchange in animals and plants. The anatomy and physiology that make this happen varies ...

. Among the

families Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Ideal ...

placed here, only the Rhabdochonidae are notably diverse. though none is considered to be

monotypic In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unispe ...

Consequently, the Thelazioidea are among the mid-sized superfamilies of Spirurida. The families of the Thelazioidea are: * Pneumospiruridae * Rhabdochonidae * Thelaziidae

References

Spirurida Animal superfamilies {{Secernentea-stub