Authors	Year	Title
Bisat	1924	The Carboniferous goniatites of the North of England and their zones. Proceedings of the Yorkshire Geological Society, 20: 40-124, pl.1-10; Leeds.
Hind	1918	On the distribution of the British Carboniferous Goniatites, with a description of one new genus and some new species. Geological Magazine, 5 (10): 434-450, pl.16; London.
Moore	1946	The Carboniferous goniatite genera Girtyoceras and Eumorphoceras. Proceedings of the Yorkshire Geological Society, 25: 387-445, 31 figs., pl.22-27; Wakefield.