schwagerinidae schwagerinidae the schwagerinidae comprise a family of large, generally fusiform, foraminiferans included in the fusulinacea, a superfamily of fusulinids, locally abundant during the later carboniferous (pennsylvanian) and most of the permian. schwagerinidaetemporal range: late carb (m penn) - late permian scientific classification domain: eukaryota clade: diaphoretickes clade: sar phylum: retaria infraphylum: foraminifera class: globothalamea (?) order: †fusulinida superfamily: †fusulinacea family: †schwagerinidaedunbar and henbest, 1930 m.l. thompson (1964) gives the following diagnosis: shell large, fusiform to irregularly cylindrical, planispiral, involute in most, irregularly uncoiled in some; spirotheca thick, composed of tectum and alveolar kariotheca; septa fluted in end zones of primitive genera, fluted completely across shell and to tops of chambers of more advanced genera; tummel singular in most forms, multiple in one genus; axial fillings absent to massive; chomata massive to slight. as with all fusulinaceans, the schagerinidae are a shallow water form which in places make up a significant portion of the sediment, now limestone. more familiar genera include schwagerina, triticites, and parafusulina.