saccarena saccarena saccarina is a monotypic fossil genus of agglutinated benthic foraminifera described in 1969, belonging to the subfamily saccorhizinae. it contains the sole species saccarina bitubulifera. its chronostratigraphic range is the ludlovian, during the upper silurian. saccarenatemporal range: saccarena from the ural mountains. scientific classification domain: eukaryota clade: diaphoretickes clade: sar phylum: retaria subphylum: ectoreta infraphylum: foraminifera class: tubothalamea order: ammodiscida suborder: hippocrepinina family: hippocrepinidae subfamily: saccorhizinae genus: †saccarena species: †s. bitubulifera binomial name †saccarena bitubuliferachernykh (1969)