A Catalogue of the Ammonites of the Liassic family Liparoceratidae in the British Museum (Natural History) British Museum (Natural History). Department of Geology. [Mollusca]. creator Spath, Leonard Frank. contributor text book London 1938 1938
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ENG https://www.biodiversitylibrary.org/bibliography/118974 10.5962/bhl.title.118974