Figure 4
From: An extraordinary fossil captures the struggle for existence during the Mesozoic
Species diversity statistics for the Lujiatun Member of the Lower Cretaceous Yixian Formation of China. (A) Rarefaction curve showing undersampled richness of Lujiatun Member. (B) Voronoi diagram showing uncorrected relative abundance data. (C) Voronoi diagram showing relative abundance corrected for taphonomic size bias. (D) Trophic biomass pyramid corrected for taphonomic factors. Psittacosaurus lujiatunensis makes up 85.9% of all primary consumer biomass in the restored terrestrial vertebrate fauna. Silhouette credits (from phylopic.org): DiBgd (sauropod); T. Dixon (maniraptoriform); S. Hartman (carnosaur, tyrannosauroid); J. Headden (Psittacosaurus); N. Mongiardino Koch (lizard); V. Sinkkonen (ornithischian); E. Willoughby (amphibian); M. Zica (mammal).
