Cyathaspididae Kiaer 1932

Family † Cyathaspididae Kiaer 1932, name and spelling in prevailing recent practice

† Poraspidae Kiaer 1932: 12 (family) † Poraspis Kiaer 1930 [family name sometimes seen as † Poraspididae or as subfamily †Poraspidinae]

†Dinaspidae Kiaer 1932: 15 (family) † Dinaspis Kiaer 1932 [type genus preoccupied by Dinaspis Leonardi 1911 in Hemiptera; invalid, Art. 39; family name sometimes seen as †Dinaspididae]

†Palaeaspidae Kiaer 1932: 15 (family) † Palaeaspis Claypole 1885 [type genus preoccupied by † Palaeaspis Gray 1870 in Reptilia; invalid, Art. 39; family name sometimes seen as †Palaeaspididae]

† Anglaspidae Kiaer 1932: 19 (family) † Anglaspis Jaekel 1927 [family name sometimes seen as †Anglaspididae]

† Cyathaspidae Kiaer 1932: 21 (family) † Cyathaspis Lankester 1865 [family name also seen as † Cyathaspididae]

†Diplaspidae Kiaer 1932: 25 (family) † Diplaspis Matthew 1887 [family name sometimes seen as †Diplaspididae]

†Dinaspidellidae Strand 1934: 327 (family) † Dinaspidella Strand 1934

†Irregularaspidae [†Irregulareaspidae] Kiaer & Heinz 1935: 42 (family) † Irregulareaspis Zych 1931 [family name sometimes seen as † Irregulareaspididae]

†Dictyonaspidae [†Dictyaspidae] Berg 1940: 362 (family) †“ Dictyonaspis ” (? † Dictyaspis Kiaer 1932) [no valid type genus, not available, Art. 11.7.1.1; probably a printing error for †Dictyaspidae, also Berg 1955: 27; type genus preoccupied by Dictyaspis Haeckel 1887 in Radiozoa; invalid, Art. 39; family name corrected to †Dictyaspididae by Schultz 1948: 221]

†Americaspidae Fowler 1947: 3 (family) † Americaspis White & Moy-Thomas 1941 [family name sometimes seen as †Americaspididae]

†Dictyaspidellidae Fowler 1947: 4 (family) † Dictyaspidella Strand 1934

†Torpedaspididae Halstead 1993: 574 (family) † Torpedaspis Broad & Dineley 1973 [name only, published after 1960, not available, Art. 13.1.1]

†Boothiaspidinae Elliott 2016: 1213 (subfamily) † Boothiaspis Broad, 1973