The First Occurrence in the Fossil Record of an Aquatic Avian Twig-Nest with Phoenicopteriformes Eggs: Evolutionary Implications
Figure 2
(a) The limestone block Vs-1 with nest and eggs in situ. The exposed surface is interpreted as being at 10–15 cm from the upper side of Bed 2 of the Valdesabina Limestone. One egg is exposed in the upper left of the figure a few cm from the main concentration or clutch enclosed in a rectangle. The block is correctly orientated with the eggs on its upper surface. Arrows point to cf. Fabaceae material. (b) Detail of the main concentration of eggs. (c) Detail of the vegetable matter forming the nest material (d) A fragmentary hatchling tibiotarsus exposed in section in the side of Vs-1.