NICKI.KS AND HA^lSl.E]!.] 



(JEOLOGTC DISTIUHUTION. 

 Jiste of species — C'< m t i i mci 1 . 

 DEVONIAN— Con t inn.'. 1. 



99 



Ptilot'ella parallela (Hall and Simpson) 



Ptilodictya gigantea (NicholHon) 



?? tarda Billings 



Ptilopora infreqnen.s (Hall an<l Simpson) 



nodosa ( Hall ) 



striata Hall ^ , 



Ptiloporella bifiin-a ( I'lrich ) 



ingequalis ( Hall and Simpson) . . , 

 laticrescens ( Hall and Simpson ) . 



Ptiloporina conica (Hall and-Simpson) 



disparilis (Hall and Simpson) ... 



j)innata (Hall and Simpson) 



sinistralis (Hall and Simpson) . .. 



Rt'ptaria nodata ( Hall ) 



stolonifera Rolle 



R<'teporidra adnata (Hall) 



cinctuta ( Hall ) 



perundata ( Hall ) 



Retei)orina t-oalescens (Hall and Simpson)... 



hamiltonensis (Prout) 



perundulata ( Hall ) 



phillipsi (Nicholson) 



prisca (Goldfuss?) (Nicholson) .. 



rlioniliifera (Hall) 



striata (Hall) 



Rhombopora lineinodis Ulrich 



lineinodis-humilis Ulrich 



subannulata T'lrich 



sulcifera I'lrich 



Scalaripora approximata Ulrich 



canadensis Whiteaves 



scalariformis Hall 



separata Ulrich 



subconcava Hall 



Selenopora circincta ( Hall ) 



complexa ( Hall ) 



Semicosi-inium ])iimbricatum (Hall) 



biserrulatum Hall 



davidsoni (Nicholson) 



Oriskauv. 



X 



yPP- na,„n,.,u. 



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