Authors Year Title
Crick 1899 On some new or little-known Goniatites from the Carboniferous limestone of Ireland.
The Annals and Magazine of Natural History,  (7) 3: 429-454; 15 fig., London.
Foord 1903 Monograph of the Carboniferous Cephalopoda of Ireland, Part V, Containing the families Glyphioceratidae (concluded) and          Prolecanitidae, with title-page and index.
Palaeontolographical Society, 57: 147-234, pl.40-49; London.
Pareyn 1961 Les Massifs Carbonifères du Sahara Sud-Oranais. Tome II. Paléontologie stratigraphique.
Publications Centre Rech. Sahariennes, Ser. Géologie, 1: 1-244, fig.1-27, pl.1-28; Paris.
Schmidt 1929 Tierische Leitfossilien des Karbon.
Gürich,G.: Leitfossilien, 6. Lief.: 1-107, pl.1-23; Berlin (Borntraeger).