Author: Jayet, A.
Title: La variation individuelle chez les ammonites et la diagnose des espèces. Note préliminaire basée sur l'analyse d'Inflaticeras varicosum (Sowerby).
Description: Bâle, Emile Birkhaeuser, 1929. large 4to (32.2 x 24.0 cm). Title page, 11 pp.; nine (groups of) text illustrations. Disbound. = An important contribution to the understanding of the species concept in ammonites, written by the Swiss malacologist and palaeontologist Adrien Jayet (1896-1971). Published in the Mémoires de la Société Paléontologique Suisse, Volume 2. A very good, clean copy.

Keywords: