Entodiniomorphida

En·to·di·nio·mor·phi·da (en″to-di″ne-o-morґfĭ-də) [ento- + Gr. dinos a whirling + morphē form] an order of ciliate protozoa (subclass Vestibuliferia, class Kinetofragminophorea) found as commensals in mammalian herbivores, including anthropoid apes. The somatic ciliature is reduced to unique tufts or bands and the oral ciliature is conspicuous, with the adoral zone being composed of membranelles that spiral toward the cytostome; the oral area is sometimes retractable, the pellicle is generally firm and may be drawn out into processes, and skeletal plates are present in many species.