Here we describe an incomplete dinosaur egg nest composed of 12 subspherical dinosaur eggs from Xiuning, southern Anhui Province, China. The eggshell measures about 1 mm in average thickness and generally comprised of only one layer, although 2–3 layers of eggshell unit can be seen in some places of the eggshell radial section. The pore canals appear honeycomb-like in tangential section, and are characterized by a density of 12 per mm² in the middle part of eggshell, and diameters between 0.14 mm and 0.34 mm. Based on these characteristics, we erect Parafaveoloolithus wannanensis oosp. nov. to accommodate the eggs from Xiuning, which clearly belong to Parafaveoloolithus but differ from all previously known oospecies within the Faveoloolithidae. This occurrence of the new oospecies P. wannanensis increase the diversity of dinosaur egg types in southern Anhui Province, extends the previously known distribution of Parafaveoloolithus, and provides more paleontology evidence to help comparison of the Cretaceous strata of southern Anhui Province.

记述了皖南地区休宁县发现的一窝由12枚蛋化石组成的不完整蛋窝。依据恐龙蛋近圆形，蛋壳较薄，平均厚度约为1 mm, 蛋壳由一层壳单元组成，局部发育2–3层次生壳单元，蛋壳弦切面气孔呈蜂窝状，蛋壳中部孔径在0.14–0.34 mm, 气孔密度为12个/mm²等特征将其归入副蜂窝蛋属(Parafaveoloolithus), 因与其他已发现的副蜂窝蛋类相区别而建立一新蛋种：皖南副蜂窝蛋(Parafaveoloolithus wannanensis oosp. nov.)。皖南副蜂窝蛋的发现不仅丰富了皖南地区蛋化石类型的多样性，还拓宽了蜂窝蛋类的古地理分布，为皖南地区白垩纪地层的对比提供了更多的古生物学证据。