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Temporal range: Middle Ordovician - Middle Silurian 472–423 Ma
|Platystrophia ponderosa (Ordovician).|
Platystrophia is an extinct genus of brachiopods that lived from the Ordovician to the Silurian in Asia, Europe, North America, and South America. It has a prominent sulcus and fold. It usually lived in marine lime mud and sands.
- Fossils (Smithsonian Handbooks) by David Ward (Page 79)
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