This fossil is part of the long, straight conical shell of an extinct orthoceras. It shows the chambers of the straight shell of this creature which now have crystalline formations in them. The limestone matrix has entered some of the chambers. There is an indication of the location of the Siphuncle or pump like organ which ran the length of the shell. The two halves are sold as a set.
Note: This is a far rarer way of seeing this otherwise common fossil, and a more accurate preparation. Usually this fossil is polished away from the host - which only shows a one dimensional aspect. This specimen presents the full 3 dimensional fossil, separated from its host matrix, and then cut in half to show its chambered structure.
Dimensions: 93mm High, 25mm Wide
Age: Silurian 380-420 million years old
Location: Er-Rachidia, Morocco