Oogenus: Neixiangoolithus FANG, in FANG, ZHANG, PANG, LI, HAN, XIE, YAN, PANG LU & CHENG, 2007
Etymology: In reference to the type locality, Neixiang, where the eggs were collected, Greek, oo, "egg" and Greek, lithus, "stone."

Oospecies: yani FANG, in FANG, ZHANG, PANG, LI, HAN, XIE, YAN, PANG LU & CHENG, 2007
Etymology: IN honor of Mr. R. H. Yan, for his contributions to teh construction of Xixia Dinosaur Egg Fossil Museum.

Holotype: 060525-1

Locality: Xixia area, Xianguan-Gaoqiu Basin, Neixiang County, Henan Province, China.

Horizon: Gaogou Formation.

Biostratigraphy:

Age: Lower-Middle Turonian Stage, Late Gallic Subepoch, Lower Gulf Epoch-Middle Campanian Stage, Senonian Subepoch, Gulf Epoch, Late Cretaceous.

Material: A clutch of approximately 30 eggs and eggshells.

Referred material:

XU, XIE, ZHANG, CHOI, KIM, GAO, JIN, JIA & GAO, 2022

41HV0001-3: An incomplete clutch of 23 eggs.

ZMNH M8854: An incomplete clutch of 18 eggs.

ZMNH M8856: An incomplete clutch of 15 eggs.

ZMNH M8709-1: An incomplete clutch of 61 eggs.

ZMNH M8709-2: An incomplete clutch of 36 eggs.

ZMNH M8880: An incomplete clutch of 33 eggs.

Unnumbered: An incomplete clutch of 7 eggs.