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 on http://en.wikipedia.org/wiki/Pentamerus

Pentamerus

• (n.) A genus of extinct Paleozoic brachiopods, often very abundant in the Upper Silurian.
Found on http://thinkexist.com/dictionary/meaning/pentamerus/

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 largely of the shells of Pentamerus.
Found on http://www.encyclo.co.uk/webster/P/48
No exact match found