1. 
   Pentamerus
   Pen·tam'e·rus noun [ New Latin See Pentamerous .] (Paleon.) A genus of extinct Paleozoic brachiopods, often very abundant in the Upper Silurian. Pentamerus limestone (Geol.) , a Silurian limestone composed large...
   Found op http://www.encyclo.co.uk/webster/P/48
   
   
2. 
   pentamerus
   <paleontology> A genus of extinct Paleozoic brachiopods, often very abundant in the Upper Silurian. ... <geology> Pentamerus limestone, a Silurian limestone composed largely of the shells of Pentamerus. ... Origin: NL. See Pentamerous. ... Source: Websters Dictionary ... (01 Mar 1998) .....
   Found op http://www.mondofacto.com/facts/dictionary?pentamerus
   
   
3. 
   Pentamerus
   • (n.) A genus of extinct Paleozoic brachiopods, often very abundant in the Upper Silurian.
   Found op http://thinkexist.com/dictionary/meaning/pentamerus/
   
   
4. 
   Pentamerus
   Pentamerus is a prehistoric genus of brachiopod that lived from the Silurian to the Middle Devonian in Asia, Europe, and North America. ==Sources== ...
   Found op http://en.wikipedia.org/wiki/Pentamerus
   
   

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