354 H. S. WILLIAMS PALEOZOIC FAU>\\S OF EASTPORT QUADRANGLE 



as Spirifer cf. octocostatus is Dalman's species Spirifer elevatus. "Stro- 

 phcedonta cf. Beckii" of that list is Leptostrophia filosa Sowerby. 

 ^'Monomerella cf. ovata var. lata" is the British form MonomereUa 

 woodiuardi ( Salter) . 



Two of the most characteristic species of the fauna are Avicula danbyi 

 McCoy, found both in the A\'enlock and Lower Ludlow in England (but 

 hitherto not reported on this continent), and Stroplionella funicuJata 

 (McCoy), which when Davidson described it was known by him only 

 from the Wenlock. 



Meristina tumida (Dalman) is also a typical transatlantic species 

 closely resembling but distinct from Meristina maria Hall of the Wal- 

 dron, Indiana, Niagara. 



The presence, also, of Pentamerus galeatus Dalman makes it clear that 

 the fauna is to be correlated with the AVenlock of Great Britain and the 

 Middle Gothland of Gothland rather than with the Coeymans fauna of 

 the Helderbergian series, where we are accustomed to meet that species 

 in American rocks. Thus the species mentioned as well as the combina- 

 tion of species in the fauna makes it clear that Zone III of the Eastport 

 series is to be correlated directly with the transatlantic Wenlock and 

 Middle Gothland formations. 



It is probable that the Coralline of Schoharie, Xew York, the Decker 

 Ferry of ISTew Jersey, and possibly the Selby dolomites of Clarke and 

 Euedemann are its near time-representatives west of the Hudson. 



Formation YV contains a pure marine fauna. It may be divided 

 faunally into two members. The lower member is rich In Brachiopods; 

 the upper member has few Brachioj^ods and its fauna is characterized 

 chiefly by Pelecypods and Gastropods. 



There is a rather sharp distinction faunally between all of the outcrops 

 of the lower member of formation lY and those of the underlying for- 

 mation, III. This distinction may be briefly described by saying that the 

 cosmopolitan species Atrijpa reticularis and Leptcena rhomhoidalis have 

 dropped out. Xo. lY contains no representatives of the genera Lepto- 

 strophia, Strophonella, Pentamerus, or Meristina, and Chonetes of the 

 C. nova scoticus type, DalmaneUas of the D. lunata Sowerby type, and 

 Camarotoechia, not AVilsonia, are abundant in zone lY. while Wilsonias 

 are abundant in III. As above stated, there is an abrupt change in the 

 fossil contents in the midst of the formation : the upper member, though 

 occasionally showing traces of the same Brachiopods as below, is charac- 

 terized by its Pelecypoda and Gastropoda, the more frequently appearing 

 of which are Grammysias, of the type of GrauDuysia cingulata Hisinger, 



