Grogan, E.D. & Lund, R. (2011)
Superfoetative viviparity in a Carboniferous chondrichthyan and reproduction in early gnathostomes. Zoological Journal of the Linnean Society, 161(3), 587–594
DOI: 10.1111/j.1096-3642.2010.00653.x

Lund, R. & Poplin, C. (1999)
Fish diversity of the Bear Gulch Limestone, Namurian, Lower Carboniferous of Montana, USA. Geobios, 32(2), 285–295
DOI: 10.1016/S0016-6995(99)80042-4

Grogan, E.D. & Lund, R. (1997)
Soft tissue pigments of the Upper Mississippian chondrenchelyid, Harpagofututor volsellorhinus (Chondrichthyes, Holocephali) from the Bear Gulch Limestone, Montana, USA. Journal of Paleontology, 71(2), 337–342

Grogan, E.D. & Lund, R. (1995)
Pigment patterns; soft anatomy and relationships of Bear Gulch Chondrichthyes (Namurian E2b; Lower Carboniferous; Montana; USA). Geobios, 28(Supplement 2), 145–146
DOI: 10.1016/S0016-6995(95)80102-2

Frickhinger, K.A. (1991)
Fossilienatlas Fische. Verlag für Natur- und Heimatkunde Hans A. Baensch, Melle

Lund, R. (1990)
Chondrichthyan life history styles as revealed by the 320 million years old Mississippian of Montana. Environmental Biology of Fishes, 27(1), 1–19
DOI: 10.1007/BF00004900

Lund, W.L. (1983)
New Catalog Number for the Holotype of Harpagofututor volsellorhinus. Journal of Paleontology, 57(5), 1135

Lund, R. (1982)
Harpagofututor volsellorhinus new genus and species (Chondrichthyes, Chondrenchelyiformes) from the Namurian Bear Gulch Limestone, Chondrenchelys problematica Traquair (Visean), and their sexual dimorphism. Journal of Paleontology, 56(4), 938–958