# Oligacanthorhynchida

Oligacanthorhynchida é uma ordem contendo apenas uma família, Oligacanthorhynchidae, que são parasitas intestinais dos vertebrados.

## Gêneros
### Echinorhynchus

Contém as seguintes espécies:
* Echinorhynchus amphipacus Westrumb, 1821
* Echinorhynchus depressus Nitzsch, 1866
* Echinorhynchus hominis Leuckart, 1876
* Echinorhynchus magretti Parona, 1885
* Echinorhynchus pachyacanthus Sonsino, 1889
* Echinorhynchus putorii Molin, 1858

### Macracanthorhynchus

Contém as seguintes espécies:
* Macracanthorhynchus catulinus Kostylev, 1927
* Macracanthorhynchus hirudinaceus (Pallas, 1781)
* Macracanthorhynchus ingens (Linstow, 1879)

### Neoncicola

Contém as seguintes espécies:
* Neoncicola avicola (Travossos, 1917)
* Neoncicola bursata (Meyer, 1931)
* Neoncicola curvata (Linstow, 1897)
* Neoncicola novellae (Parona, 1890)
* Neoncicola pintoi (Machado, 1950)
* Neoncicola potosi (Machado, 1950)
* Neoncicola sinensis Schmidt and Dunn, 1974
* Neoncicola skrjabini (Morosow, 1951)

### Nephridiorhynchus

Contém as seguintes espécies:
* Nephridiorhynchus major (Bremser, 1811)
* Nephridiorhynchus palawanensis Tubangui, et al., 1938
* Nephridiorhynchus thapari Sen and Chauhan, 1972

### Oligacanthorhynchus

Contém as seguintes espécies:
* Oligacanthorhynchus aenigma (Reichensperger, 1922)
* Oligacanthorhynchus atrata (Meyer, 1931)
* Oligacanthorhynchus bangalorensis (Pujatti, 1951)
* Oligacanthorhynchus carinii (Travassos, 1917)
* Oligacanthorhynchus cati (Gupta and Lata, 1967)
* Oligacanthorhynchus circumplexus (Molin, 1858)
* Oligacanthorhynchus citilli (Rudolphi, 1806)
* Oligacanthorhynchus compressus (Rudolphi, 1802)
* Oligacanthorhynchus decrescens (Meyer, 1931)
* Oligacanthorhynchus erinacei (Rudolphi, 1793)
* Oligacanthorhynchus gerberi (Baer, 1959)
* Oligacanthorhynchus hamatus (Linstow, 1897)
* Oligacanthorhynchus iheringi Travassos, 1917
* Oligacanthorhynchus kamerunensis (Meyer, 1931)
* Oligacanthorhynchus kamtschaticus Hokhlova, 1966
* Oligacanthorhynchus lagenaeformis (Westrumb, 1821)
* Oligacanthorhynchus lamasi (Freitas and Costa, 1964)
* Oligacanthorhynchus lerouxi (Bisseru, 1956)
* Oligacanthorhynchus longissimus (Golvan, 1962)
* Oligacanthorhynchus major (Machado, 1963)
* Oligacanthorhynchus manifestus (Leidy, 1851)
* Oligacanthorhynchus manisensis (Meyer, 1931)
* Oligacanthorhynchus mariemily (Tadros, 1969)
* Oligacanthorhynchus microcephala (Rudolphi, 1819)
* Oligacanthorhynchus minor Machado, 1964
* Oligacanthorhynchus oligacanthus (Rudolphi, 1819)
* Oligacanthorhynchus oti
* Oligacanthorhynchus pardalis (Westrumb, 1821)
* Oligacanthorhynchus ricinoides (Rudolphi, 1808)
* Oligacanthorhynchus shillongensis (Sen and Chauhan, 1972)
* Oligacanthorhynchus spira (Diesing, 1851)
* Oligacanthorhynchus taenioides (Diesing, 1851)
* Oligacanthorhynchus thumbi
* Oligacanthorhynchus tortuosa (Leidy, 1850)
* Oligacanthorhynchus tumida (Van Cleve, 1947)

### Oncicola

Contém as seguintes espécies:
* Oncicola campanulata (Diesing, 1851)
* Oncicola canis (Kaupp, 1909)
* Oncicola chibigouzouensis Machado, 1963
* Oncicola confusus (Machado, 1950)
* Oncicola dimorpha Meyer, 1931
* Oncicola freitasi (Machado, 1950)
* Oncicola gigas Meyer, 1931
* Oncicola justatesticularis (Machado, 1950)
* Oncicola luehei (Travassos, 1917)
* Oncicola machadoi Schmidt, 1917
* Oncicola macrurae Meyer, 1931
* Oncicola malayanus Toumanoff, 1947
* Oncicola martini Schmidt, 1977
* Oncicola megalhaesi Machado, 1962
* Oncicola michaelseni Meyer, 1932
* Oncicola micracantha Machado, 1949
* Oncicola oncicola (Ihering, 1892)
* Oncicola paracampanulata Machado, 1963
* Oncicola pomatostomi (Johnston and Cleland, 1912)
* Oncicola schacheri Schmidt, 1972
* Oncicola signoides (Meyer, 1932)
* Oncicola spirula (Olferas, 1819)
* Oncicola travassosi Witenberg, 1938
* Oncicola venezuelensis Marteau, 1977

### Pachysentis

Contém as seguintes espécies:
* Pachysentis angolensis (Golvan, 1957)
* Pachysentis canicola Meyer, 1931
* Pachysentis dollfusi (Machado, 1950)
* Pachysentis ehrenbergi Meyer, 1931
* Pachysentis gethi (Machado, 1950)
* Pachysentis lenti (Machado, 1950)
* Pachysentis procumbens Meyer, 1931
* Pachysentis procyonis (Machado, 1950)
* Pachysentis rugosus (Machado, 1950)
* Pachysentis septemserialis (Machado, 1950)

### Prosthenorchis

Contém as seguintes espécies:
* Prosthenorchis elegans (Diesing, 1851)
* Prosthenorchis fraterna (Baer, 1959)
* Prosthenorchis lemuri Machado, 1950

### Tchadorhynchus

Contém as seguintes espécies:
* Tchadorhynchus quentini Troncy, 1970