Hollardops Mesocristata And Gerastos Trilobite. Excellent double specimen plate, the Hollardops Mesocristata trilobite dating back to the Palaeozoic era, middle Devonian, approximately 388 million years. Originating in Morocco, North Africa.
The Gerastos species is known for its tubeculate cephalon or small tubercles on their front face, adopting reasonably large eyes for their size. Pepared to expose their exoskeleton, seated on their original bed rock of limestone commonly know as 'matrix'. The Gerastos is a member of the Proetida, this is the family of Proetidae which were among the last of the arthropods to become extinct in the Permian era, approximately 130 million years later.
Using the latest technology, pneumatic tools in conjunction of an air abrasive micro sand-blaster this double specimen plate has been prepared in a fossil preparation laboratory.
A brief trilobite history. The order or group of trilobites evolved during the Pre-Cambrian period approximately 550 million years ago, One of the most complex forms of early life, the trilobites reign lasted over 270 million years coming to an end around 250 million years ago in the time of the Permian period. Trilobite genus-types were diverse and globally extensive. The Trilobite was a member of the Proetida Order, Family of the Proetidae. Trilobites were complex animals, having the first compound eyes and segmented bodies which enabled them to enrolled, possibly for a defence posture.