Fig. 8From: Size distribution of the Late Devonian ammonoid Prolobites: indication for possible mass spawning eventsHistograms showing the size distribution of the four species Prolobites inops Korn 2002, Prionoceras divisum (Münster 1832), Platyclymenia annulata (Münster 1832), and Platyclymenia subnautilina (Sandberger 1855) within the two shale layers of the Platyclymenia annulata Zone of the Ense localityBack to article page