Coronograptus cyphus (Lapworth, 1876)

1876     Monograptus cyphus, sp. nov. — Lapworth, pp. 352, fig. 12:3a, c

1910     Monograptus cyphus — Elles et Wood, pp. 362, fig. 36:1a-e

1952     Pristiograptus cyphus — Münch, pp. 83, fig. 17:1

1965     Pristiograptus cyphus — Obut et Sobolevskaya, pp. 66, fig. 11:1-2

1970     Monograptus cyphus — Hutt et Rickards, pp. 62, fig. 4:11

1976     Coronograptus cyphus (Lapworth, 1876) — Sennikov, pp. 183-184, fig. 11:3-4

1985     Coronograptus cyphus (Lapworth, 1876) — Obut & Sennikov, pp. 57