1876
Dimorphograptus elongatus, sp. nov. — Lapworth, pp. 547, fig. 20:12a-12b
1908
Dimorphograptus elongatus — Elles & Wood, pp. 357, fig. 35:11a-11c, text fig. 234a-234b
1952
Dimorphograptus elongatus — Münch, pp. 72, fig. 11:10a-10b
1971
Dimorphograptus elongatus elongatus Lapworth, 1876 — Schaurer, pp. 53, fig. 19:1-3; 20: 3,4
1974
Dimorphograptus elongatus — Hutt, pp. 50, fig. 7:1-4
1997
Dimorphograptus elongatus Törnquiat, 1899 — Koren & Bjerreskov, fig. 17A-E
2008
Dimorphograptus elongatus Lapworth, 1876 — Šorch & Feist, pp. 953, fig. 6.2
2014
Dimorphograptus elongatus — Maletz et al., pp. 177