Edwards, F. E., 1856. Descriptions of Shells from the Older Tertiaries of England. A Monograph of the Eocene Mollusca, or descriptions of shells from the older Tertiaries of England. Part III, No. II. Prosobranchiata (continued), 3 (2         ).
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            New Species-Group Names:
            
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                    alatus Edwards, 1856. p. 202. pl. xxv. f. 1a. b.
                
 
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                    diadema Edwards, 1856. p. 190. pl. xxiv. f. 8a-d. 
                
                 
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                    filifer Edwards, 1856. p. 195. 
                
                 
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                    hemilissa Edwards, 1856. p. 202.
                
 
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                    lamarckii Edwards, 1856. p. 194. pl. xxv. f 3a-c. 
                
                 
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                    seminuda Edwards, 1856. p. 200.