Trichomonadida

Trichomonadida is an order of anaerobic protists, included with the parabasalids. Members of this order are referred to as trichomonads.

Some organisms in this order include:

• Trichomonas vaginalis, an organism living inside the vagina of humans
• Dientamoeba fragilis, parasitic ameboid in humans
• Histomonas meleagridis, parasite that causes blackhead disease in poultry
• Mixotricha paradoxa, a symbiotic organism inside termites, host of endosymbionts

• Simplicimonas similis, a parasite originally described from a gecko