metopus murrayensis metopus murrayensis metopus murrayensis is a species of metopid first found in soil from the murray river floodplain, australia, after which it is named. it can be distinguished by having a globular macronucleus surrounded by many refractive granules and a big preoral dome. metopus murrayensis scientific classification domain: eukaryota (unranked): sar (unranked): alveolata phylum: ciliophora subphylum: intramacronucleata class: armophorea order: armophorida family: metopidae genus: metopus species: m. murrayensis binomial name metopus murrayensisvďačný & foissner, 2016