California Mesonacis fremonti Trilobite
Order Redlichiida, Family Redlichiidae
Time: Early Cambrian
is 2 7/8” in length
Latham Shale Formation, Marble Mountains, California
fremonti was a genus of trilobite that has had a long presence
in the fossil record. This one was excavated at the world famous
California Marble Mountains site, located in the Mojave Desert.
It is from an old collection. The genus is impressive, robust looking, and could grow to an
impressive size. This one is centered on a small piece of muted
purple shale. The matrix has the typical fine-grained, fractured
look of the Latham Shale beds. It
was professional prepared using air abrasion. Trilobites from this
formation are rarely found fully intact.
fossil pictures to enlarge