Oviraptor clutch
Dinosaur origin of egg color: oviraptors laid blue-green eggs
Published 29 August

Using a double-checking liquid chromatography ESI-Q-TOF mass spectrometry routine, researchers have traced the origin of colored eggs to their non-avian dinosaur ancestors by providing the first record of the avian eggshell pigments protoporphyrin and biliverdin in the eggshells of Late Cretaceous oviraptorid dinosaurs.

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Jasmina Wiemann, Tzu-Ruei Yang, Philipp N. Sander, Marion Schneider, Marianne Engeser, Stephanie Kath-Schorr, Christa E. Müller, P. Martin Sander

image info

This clutch illustrates how eggs are arranged in pairs with their blunt ends pointing to the clutch center. The eggs are arranged in layers separated by sediment. From panel C of figure 1. See paper for more details. Image CC BY 4.0, 2017.
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