ancyromonas ancyromonas ancyromonas is a genus of basal eukaryote consisting of heterotrophic flagellates. ancyromonas ancyromonas sp. scientific classification domain: eukaryota phylum: loukozoa order: ancyromonadida family: ancyromonadidae genus: ancyromonaskent 1880 type species ancyromonas sigmoideskent, 1880 species a. abrupta skvortzov 1957 a. contorta (klebs 1883) lemmermann 1914 a. lata skvortzov 1957 a. magna zhang & yang 1993 a. metabolica skvortzov 1957 a. nitzschiae skvortzov 1957 a. parasitica massart a. prima skvortzov1957 a. rotundata skvortzov 1957 a. rugosa skvortzov 1957 a. ruminantium certes 1899 a. socialis skvortzov 1957 a. sigmoides kent 1880 sensu heiss, walker & simpson 2010 it includes the species ancyromonas sigmoides, first described by saville kent in 1880. the genus was rediscovered in modern times by hänel in 1979. they are about 5 μm long and live in both marine and freshwater habitats with a global distribution. in 2008, cavalier-smith et. al proposed the reassignment of all known species of ancyromonas into a new genus, planomonas. planomonas has since been described as a junior synonym of ancyromonas. ancyromonas does not belong to any of the eukaryotic supergroups, and they appear more basal than malawimonas, placing them in loukouzoa, possibly relatives of podiates, and depending on the placement of the root position of the eukaryotes.