Sunday, November 23, 2014

A spiny Comura trilobite from Morocco.  This 350 million year old trilobite shows amazing detail including over 40 free standing spines and eye facets thanks to being encased in hard limestone.  It was found when the limestone was broken and a cross section of the trilobite could be seen.  It then had to be meticulously prepared from the surrounding rock under microscope.  Truly a stunning specimen.

Trilobites are an extinct type of marine arthropod that had a hard exoskeleton.  They were one of the dominant life forms in our oceans for 270 million years before going extinct along with 90% of all life during the Permian mass extinction.  Owing to their hard shell they are often exquisitely preserved in limestones and shale.
Photo from Fossil Era

A spiny Comura trilobite from Morocco.  This 350 million year old trilobite shows amazing detail including over 40 free standing spines and eye facets thanks to being encased in hard limestone.  It was found when the limestone was broken and a cross section of the trilobite could be seen.  It then had to be meticulously prepared from the surrounding rock under microscope.  Truly a stunning specimen.

Trilobites are an extinct type of marine arthropod that had a hard exoskeleton.  They were one of the dominant life forms in our oceans for 270 million years before going extinct along with 90% of all life during the Permian mass extinction.  Owing to their hard shell they are often exquisitely preserved in limestones and shale.
Photo from Fossil Era

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