Oogenus: Undulatoolithus WANG, ZHAO, WANG, LI & ZOU, 2013
Etymology: Latin, undulatus, 'wavy', Greek, Oo, 'egg', and Greek, lithus, 'rock or stone'.
Oospecies: pengi WANG, ZHAO, WANG,
LI & ZOU, 2013
Etymology: In honor of the late Peng Anbao, chief curator of the Pingxian Museum, who collected and portected the dinosaur eggs from the Pingxian Basin.
Locality: Chingxi, Pingxiang City, Jiangxi Province, China.
Horizon: Zhoutian Formation.
Age: Late Cretaceous.
Material: A clutch wiht 5 more or less well preserved eggs adn 3 broken eggs.