Finarelli, John A.; Coates, Michael I. (1 March 2014). "Chondrenchelys problematica (Traquair, 1888) redescribed: a Lower Carboniferous, eel-like holocephalan from Scotland". Earth and Environmental Science Transactions of the Royal Society of Edinburgh. 105 (1): 35–59. doi:10.1017/S1755691014000139. S2CID130533675.
Traquair, R. H. (March 1888). "II.—Further Notes on Carboniferous Selachii". Geological Magazine. 5 (3): 101–104. doi:10.1017/S0016756800173467.
jstor.org
Richard Lund (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. JSTOR1304712.
semanticscholar.org
api.semanticscholar.org
Finarelli, John A.; Coates, Michael I. (1 March 2014). "Chondrenchelys problematica (Traquair, 1888) redescribed: a Lower Carboniferous, eel-like holocephalan from Scotland". Earth and Environmental Science Transactions of the Royal Society of Edinburgh. 105 (1): 35–59. doi:10.1017/S1755691014000139. S2CID130533675.