Le diodon devenu requin : l'histoire des premières découvertes du genre Ptychodus (Chondrichthyes).

100 pp., richement illustré avec 63 figures en couleur, 2 tab., couverture souple, broché, papier glacé. ISBN 978-2-9565479-2-1 Neuf - Book (in French with English abstract) about the early history of the discovery of Ptychodus from the 18th century up to the beginning of the 19th century. The teeth of these Cretaceous sharks were first recognized as those of porcupine fish. Lavishly illustrated. Stiff wrappers. New