Trilobites
The trilobites here are [right] Ceraurus pleurexanthemus (Ordovician, showing the underside; natural size three inches), and [left] Lichas boltoni (Silurian; natural size, 7 inches). The genus of the latter has been renamed. An excellent specimen of A. boltoni can be seen in the Denver Museum of Natural History's Prehistoric Journey exhibit.
Back to Glossary
Back to Glossary