According to Xinhua News Agency on August 4, congtai district of Handan City, Hebei Province, recently found a "horn stone paleontology fossil", which appeared in the Ordovician period 438 to 510 million years ago, this discovery is of great significance for the division of stratigraphic era and the study of paleogeography.
(A kind of horn stone - Amen corner stone)
Hornstones are invertebrates, mollusk phylums with a hard outer shell, and are cephalopods that lived widely in the Ordovician oceans.
(A kind of horn stone - horn horn stone)
According to Ding Rui, deputy director of the Propaganda Department of Congtai District, Handan City, this fossil is embedded in a piece of limestone in Longhu Park, Congtai District, with fragments about 6 cm long and about 3 cm wide, gray-brown, and the structure of the body pipe and horizontal stripes is relatively clear. Originally discovered by tourists inadvertently, it was initially thought to be a "fish fossil", and then corrected by the scientific identification of the first address brigade of the Hebei Provincial Bureau of Geology and Mineral Resources.
(The picture in the text is from the Internet)