Eggshell Porosity Provides Insight on Evolution of Nesting in Dinosaurs
Fig 1
Porosity of archosaur eggshell.
Schematic diagram of archosaur eggshell with high porosity (A) and low porosity (B), modified from [18]; tangential thin sections of living covered nester Caiman latirostris (C), living open nester Pavo cristatus (D), and non-avian maniraptoran Troodon formosus (E). Abbreviations; A, individual pore area; D, pore density; Ls, pore length. Arrows indicate pore canals.