WOODWARD, A.S. (1889)
Catalogue of the fossil fishes in the British Museum. Part. I. British Museum (Natural History): 474 p., fig., 17 pl.
REIF, W.-E. (1974)
Metopacanthus sp. (Holocephali) und Palaeospinax egertoni S. Woodward (Selachii) aus dem unteren Toarcium von Holzmaden. Stuttgarter Beiträge zur Naturkunde, Serie B, 10: 1–9, 4 fig.
MAISEY, J.G. (1977)
The fossil selachian fishes Palaeospinax EGERTON, 1872 and Nemacanthus AGASSIZ, 1837. Zoological Journal of the Linnean Society, 60 (3): 259–273
DOI: 10.1111/j.1096-3642.1977.tb01029.x