Cryptograptus schaeferi Lapworth, 1880

1880     Cryptograptus tricornis var. schaeferi n. var. — Lapworth, fig. 5:28a,b

1913     Cryptograptus lanceolatus n. sp. — Hadding, pp. 40, fig. 2:10-12

1913     Cryptograptus tricornis (Carruthers) — Hadding, pp. 40, fig. 2:13-14

1937     Cryptograptus tricornis (Carruthers) — Ekström, pp. 39, fig. 9:1-5

1937     Cryptograptus tricornis var. longispinus nov. — Ekström, pp. 40, fig. 8:13

1937     Cryptograptus lanceolatus Hadding — Ekström, pp. 40, fig. 8:11-12

1967     Cryptograptus schaeferi Lapworth — Jaeger, fig. 1:9

1976     Cryptograptus tricornis var. schaeferi — Jaeger, fig. 1

1996     Cryptograptus schaeferi Lapworth — Maletz & Mitchell, pp. 646, fig. 2:3,4; 4:11-15; 5