millerella millerella millerella is an extinct genus of fusulinid belonging to the family eostaffellidae. fossils of the genus have been found in carboniferous beds in north america and central asia. millerellatemporal range: carboniferous~ scientific classification domain: eukaryota clade: diaphoretickes clade: sar phylum: retaria infraphylum: foraminifera class: globothalamea (?) order: †fusulinida family: †eostaffellidae genus: †millerella species m. marblensis thompson, 1942 m. pura malakova, 1956