Energy disk.

　　It is easy to preserve ammonite fossils, and a large number of complete individual fossils may be collected in limestone, marl, shale and siliceous rocks, and the size and shape are very different. Ammonite is widely distributed, rapidly evolving and diverse.

　　Because the ammonite fossils will be filled with calcite, chalcedony, Shi Ying, pyrite, etc. during the formation process, the polished ammonite fossils will show beautiful colors and elegant patterns, as beautiful and lovely as Jin Ju symbolizing autumn!

　　I can't. There are many varieties of ammonites, so it seems that even rare varieties are not unusual. Therefore, even a particularly rare species, compared with other kinds of fossils, the price is not very convincing.