A Monograph of the Eocene Mollusca, or, Descriptions of Shells from the Older Tertiaries of England, Part I: Cephalopoda
Edwards, Frederic E..
1849.
A Monograph of the Eocene Mollusca, or, Descriptions of Shells from the Older Tertiaries of England, Part I: Cephalopoda.
In: London: Palaeontographical Society.