Like other trilobites, the creature is made up of three different parts: the cephalon (head), the thorax (body), and the pygidium (tail). The creature was protected by a hard calcite shell and this is what remains fossilized to this day. This shell would not grow with the creature, so the shell wall molted several times during the creature's lifetime. Thus, one trilobite may have left several fossils during its lifetime. The trilobite is the first creature known to have eyes, some believe they had 360-degree vision. The phacops specimens have truly amazing eyes. These eyes are called schizochroal or aggregate eyes. The calcite lenses are sometimes preserved. Often the phacops has bumps preserved on the surface of the specimen. The phacops lived between 345 million and 435 million years ago.
- Dimensions: 110 mm x 80 mm x 80 mm.
- Genuine fossil.
- This item includes an information card about the fossil.
- A certificate of authenticity is included with this item.
This fossil requires special care - exposure to water and other chemicals, such as cleaning products or aerosols, will damage it over time. If you polish the stone, use a dry cloth only, or an air duster that does not contain any disinfectant or other chemicals.