434 



MK. A. WADE ON THE LLANDOVERY AND [Allg. I9II, 



Powis Castle 

 Group. 







Cloddiatt & 

 Cefn Beds. 



bp 

 >> 



CD 







Christiania. 1 







r^ 





List oe Llandovery Fossils 













M 









(see pp. 431-35). 













ri 

 w s 



























Pn 





•+S 



>> 









c 





be 



<o3 



1>^ 



GO 

 O 



s 





e3 





T3 

 Id 



O 



CO 



>> 



«£ 





8>| 



+-> 



II 



Ph 



pq 







>-A 





O 



>-; 



O 



M 



<H^ 



SP 







X 





Calymene blumenbaclii Brong. (From un- 





















derlying beds.) 























Climaconraptiis innotatns Nicholson 



x 





















Climacograptus cf. rectangularis M'Coy ... 



X 





















Climacograptus medius Tomquist 



x 













X 



X 









Duncanella sp. ? 











X 



X 



Favosites gothlandica Goldfuss 





X 





V 





Favosites aspera d'Orbijniy 



x 









X 



X (base) 







X 





Favosites sp 







X 











X 



X 



Lindstroemia subduplicata M'Coy 



















X 



X 



Lindstr. subdupl. var. crenulata, M'Coy ... 















X 









Lindstroemia sp 











j ... 





X 



X 



X 



X 



Petraia bina Lonsdale 







X 









Petraia aff. elongata Phillips 







X 





Petraia sp 











X 





Pinacopora grayce Nich. & Eth 





X 









Streptelasma europceum Roemer 















X 





X 





Streptelasma sp. nov. ? aff. breve Ulrich 



Syringopora cf. b ifurcata Lonsdale 













X 



X 







X 



Monticulipora (?) fibrosa ~) From 



Goldfuss. > underlying 

 Monticulipora lens (?) M'Coy 3 beds. 











X 





























X 





















x 





Callopora sp 











X 









X 



X 



Ptilodictya dichotoma Portl 



Retepora h isingeri M'Coy 











X 









X 





Stictoporella angularis Ulrich 















x 



x 



x 







x 

















X 





Tentacidites anglicus Salter. (From under- 

 lying beds.) 

 Cornulites serpularius Schlotheim 







X 





X 



X (base) 







X 





Murchisonia cf. gyrogonia M'Coy 











X 









V 







x 









X 













Atrypa retictdaris Linn 



x 





X 





X 



X 







Y 





Camarotcechia decemplicata Sowerby 



x 









X 









X 

 X 





Camarotoechia nucula Sowerby 



X 



.... 



X 



X 



X 



::: 





Dayia navicula Sowerby 









X 



Leptcena rhomboidalis Wilck. (From un- 

 derlying beds.) 



X 





X 



X 



x 



X 



X 









Lingula crumena Phillips 















X 



X 



X 





Meristella (?) crassa Sowerby 



Meristella (?) subundata M'Coj r 



X 









X 

 X 



X (base) 

 X (base) 



X 









Meristella sp 



X 











X 



Meristina cf . tumida Dalm 











Orthis rustica Sowerby " 



Orthis (Dalmanella) testudinaria 









X 



... 



X 



X 



X 





X 











x 



X 





X 











Dalm. 



r S S? 















X 



x l 



X 



Orthis (P>.) eleqantula Dalm. ... 



X 







X 



X 



X 







X 





Orthis plicata Sow 



3 



X 







p 







Orthis cf. calligramma Dalm _ - 



1 Dr. Johan Kiaer, in ' Das Obersilur imKristianiagebiete' Christiania, 1908(Vidensk.- 

 Selsk. Skrifier I. Math.-Naturv. "Klasse, 1906, pt. 2), has been able to divide the Llandovery 

 into stages or zones in that area. I have therefore compared the ranges of the Llandovery 

 fossils with those recorded by him. r It will be noted that the Powis-Castle Group 

 correlates very fairly with Dr. Kiser's Etage 6. 



