hirsutospirellidae hirsutospirellidae the hirsutospirellidae, established for the late triassic genus hirsutospirella, are a family of foraminifera within the involutinida that produced calcareous tests with a proloculus followed by an undivided trochospirally enrolled tubular second chamber, in which the spiral side has prominent spinelike protrusions and umbilical side has a shallow umbilical filling. hirsutospirellidaetemporal range: late triassic (norian) hirsutospirella pilosa scientific classification domain: eukaryota (unranked): sar (unranked): rhizaria phylum: retaria subphylum: foraminifera class: spirillinata order: involutinida family: hirsutospirellidaezaninetti,et al 1985