3Fossil sites
Xiliangsi Formation
Xiliangsi Formation in China: 3 fossil sites. Typical age: 477–468 million years (Ordovician).
3Fossil sites
19Finds
477–468 million yearsTypical age
OrdovicianMain period
Where its fossils were found
Ordovician
By geological period
Ordovician3
What was found
Trilobites · 19Hanchungolithus, Isoteloides, Ptychopyge, Neseuretus, Ceratopyge, Isotelus, Ningkianolithus, Megistaspis, Actinopeltis, Encrinuroides, Pseudocalymene, Metopolichas, Nileus, Pseudobasilicus
Towns with the most fossil sites nearby
Other formations of the same period
Ordovician
Dawan Formation 112Wufeng Formation 67Xiazhen Formation 58Meitan Formation 57Baota Formation 44Saergan Formation 37Zitai Formation 36Shiyanhe Formation 33Honghuayuan Formation 32Changwu Formation 26Lianglitag Formation 26Hsiangyang Formation 26Beiguoshan Formation 24Kuanyinchiao Formation 23Yehli Formation 22Shan Majiagou Formation 21Ningguo Formation 20Xia Majiagou Formation 20Tongzi Formation 19Pingliang Formation 19Yingan Formation 18Yeli Formation 17Dashaba Formation 17Nantsinkwan Formation 16