Searles Valentine Wood: A monograph of the Crag Mollusca, or, description of shells from the Middle and Upper Tertiaries of the east of England, 2. Bivalves. Printed for the Palaeontographical Society, London, 1851-1861 Online bei Biodiversity Heritage Library, hier S. 160/61, Taf. 13
Nicolai Mohr: Forsog til en Islandsk Naturhistorie, med adskillige oekonomiske samt andre Anmaerkninger. C.F. Holm, Kiobenhavn/Kopenhagen, 1786 Online bei Biodiversity Heritage Library, S. 129.
