1. 
   Agnostus
   Agnostus is a genus of trilobites that lived approximately 540 to 438 million years ago. The agnostids were small (some measuring only 6 millimeters), with two thoracic segments and a large tail. Agnostus were blind trilobites, with no fossils of the species found with eyes. They were likely benthi...
   Found op http://en.wikipedia.org/wiki/Agnostus
   
   
2. 
   Agnostus
   genus of trilobites (an extinct group of aquatic arthropods) found as fossils in rocks of Early Cambrian to Late Ordovician age (those deposited ... [1 related articles]
   Found op http://www.britannica.com/eb/a-z/a/29
   
   

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