1925
Delthyris elegans — Muir-Wood, pp. 190, fig. figs. 3-6
1957
Howellella elegans (Muir-Wood, 1925) — Boucot, pp. 315
1970
Howellella elegans (Muir-Wood, 1925) — Rubel, pp. 64-65, fig. pl. 39: 18-24. pl. 40: 12
1974
Howellella elegans (Muir-Wood, 1925) — Bassett et Cocks, pp. 38, fig. pl. 10: 5
1978
Howellella elegans (Muir-Wood, 1925) — Cocks, pp. 162
1984
Howellella elegans (Muir-Wood, 1925) — Rubel et al., pp. 27
1998
Howellella elegans (Muir-Wood, 1925) — Clarkson et al. , pp. 68, fig. fig. G
2002
Howellella (Howellella) elegans (Muir-Wood, 1925) — Carter, pp. 1826, fig. fig. 1211, 3a-b
2006
Howellella (Howellella) elegans (Muir-Wood, 1925) — Johnson et al., pp. 1826, fig. fig. 1211, 1a-d
2007
Howellella elegans (Muir-Wood, 1925) — Gallagher & Harper, pp. 85, fig. pl. 11: 16