Cairanoolithus

† Cairanoolithus is an ootaxon — a genus defined by fossil eggs rather than body fossils — from the Late Cretaceous of southern France. The eggs are large and spherical, attributed to titanosaurian sauropod dinosaurs. Characterized by a distinctive shell microstructure, Cairanoolithus eggs are found in nest clusters in the Aix-en-Provence Basin. Their study provides important data on sauropod reproductive biology and nesting behavior in Late Cretaceous Europe.