1915 Title, half title, 226 (numbered 229-454), [v] pp.; 14 photographic plates with explanatory text leaves, 4to (30.0 x 23.0 cm). Printed wrappers.A well-illustrated monograph. The plates and text figures show well-preserved ammonites including new species. This is the original, Hungarian edition, published in the series, Geologica Hungarica, volume 1(3-4). Inscribed dedication on the front wrapper, presumably by the author. Wrappers detached and chipped at edges. Otherwise clean, very good.