Cylicocyclus nassatus

{{Short description|Species of roundworm}}

{{Speciesbox

| image =

| genus = Cylicocyclus

| species = nassatus

| authority = Looss, 1900

| synonyms =

}}

Cylicocyclus nassatus is a very common species of cyathostomin, which are important intestinal parasites of horses. Cyathostomins, including C. nassatus, are nematodes.{{Cite journal|title=Key characters for the microscopical identification of Cylicocyclus nassatus and Cylicocyclus ashworthi (Nematoda: Cyathostominae) of the horse, Equus caballus|author1=J. R. Lichtenfels |author2=Vitaliy A. Kharchenko |author3=C. Sommer |author4=M. Ito |journal= Journal of the Helminthological Society of Washington| volume =64| pages= 120–127|url=https://www.researchgate.net/publication/225067080_Key_characters_for_the_microscopical_identification_of_Cylicocyclus_nassatus_and_Cylicocyclus_ashworthi_(Nematoda_Cyathostominae)_of_the_horse_Equus_caballus}}{{Cite journal|pmid=9193955|year=1997|last1=Hung|first1=GC|last2=Chilton|first2=NB|last3=Beveridge|first3=I|last4=McDonnell|first4=A|last5=Lichtenfels|first5=JR|last6=Gasser|first6=RB|title=Molecular delineation of Cylicocyclus nassatus and C. Ashworthi (Nematoda:Strongylidae)|volume=27|issue=5|pages=601–5|journal=International Journal for Parasitology|doi=10.1016/s0020-7519(96)00192-0}}