Fig. 6From: Size distribution of the Late Devonian ammonoid Prolobites: indication for possible mass spawning eventsHistograms showing the size distribution of the two species Prolobites delphinus (Sandberger & Sandberger 1851) and Sporadoceras bidens (Sandberger & Sandberger 1851) within the seven successive horizons of the Prolobites delphinus Zone at the Enkeberg locality (excavation in 1992)Back to article page