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Archiac & Verneuil | 
1842 | 
On the Fossils of the Older Deposits in the Rhenish Provinces; preceded by a general Survey of the Fauna of the Palaeozoic Rocks, and folowed by a Tabular List of the Organic Remains of the Devonian	 
Transactions of the geological Society of London, (2) 6: 303-410, pl.25-38; London.	 
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