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FORMATIONS OF SILURIAN AGE. 
. Escharcpora siluriana n. sp. 
. Pholidops ovata Hall. 
. Stropheodonta bipartita (Hall). 
. Leptena rhomboidalis (Wilck.). 
. Orthothetes interstriatus (Hall). 
. Orthothetes deckerensis un. sp. 
. Chonetes jerseyensis Weller. 
. Orthis flabellites Foerste. 
. Dalmanella postelegantula n. sp. 
. Rhindomella preoblata n. sp. 
9. Pentamerus circularis n. sp. 
. Rhynchonella deckerensis n. sp. 
. Rhynchonella agglomerata n. sp. 
. Wilsonia globosa n. sp. 
. Atrypa reticularis (Linn.). 
24. 
. Smrifer vanuxemi var. minor n. var. 
. Cyrtina magnaplicata n. sp. 
. Reticularia bicostata (Van.). 
. Rhynchosyra formosa Hall. 
. Whitfieldella nucleolata (Hall). 
. Edmondia deckerensis n. sp. 
. Pterinea emacerata (Con.). 
. Pteronites? subplana (Hall). 
. Ptychopteria? subquadrata nu. sp- 
. Actinopteria reticulata n. sp. 
. Mytilarca obliqua n. sp. 
. Proetus pachydermatus Barrett. 
. Proetus depressus n. sp. 
. Proetus spinesus n. sp. 
Atrypa? lamellata Hall. 
. Calymene camerata Con. 
. Dalmanites aspinosa ni. sp. 
. Leperditia altoides n. sp. - 
. Beyrichra sussexrensis n. sp. 
. Beyrichia barrett n. sp. 
. Beyrichia perinflata un. sp. 
5. Beyrichia jerseyensis n. sp. 
. Beyrichia nearpassi n. sp. 
. Beyrichia deckerensis n. sp. 
. Bythocypris nearpassi n. sp. 
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