FAUNAL SUCCESSION OF THE UPPEE BERNICIAN 



609 



Woodend Limestone. 



Fan/ml Diagnosfs. 



Corals : — 



Lithostrotion maccoyanuin, L. irregtdare, and Z. junceum 

 abundant. Dibunophyllids not uncommon. 



Brachiopods : — Productus a very abundant. Semireticulate 

 Prodiictl plentiful. 



Fan a a I List : — 



Dibunophyllum sp. 

 Lithostrotion irregulare (Phill.) 

 Lithostrotion martini, Ed. & H. 

 Lithostrotion junceum (Flem.) 

 Lithostrotion portlocki (Bronn.)var. 



maccoyanum, Ed. & H. 

 Zaphrentis sp. 

 Syringopora sp. 

 Favositoid coral. 

 Heterotrypa tumida (Pliill.) 

 Seminula ambigua (Sow.) 

 Spirifer planicosla, iM'Coy. 



I Giganteid Producti (Productus a) 

 Productus longispinus, Sow. 

 Productus semireticulatus (Mart.)cf. 



P. pugilis, Phill. 

 Aviculopecten. 

 Lithodonius lingualis (Phill.) 

 Bellerophon sp. 

 Dentalium ingens, de Kon. 

 Euomphalus pentangulatus, Sow. 

 Loxonema murchisoniana, de Kon. 

 Orthoceras sp. 

 Archaeocidaris urei (Flem.) (plates) 



Notes : — Lithostrotion niaccoyaimni occurs in large masses. 

 Productus semireticulatus is represented by a small form 

 closely approaching Phillip's P. pugilis. 



This very fossiliferous bed needs much further exploration. 



Dun Limestone. 



The bed lies about 100 or so feet below the Woodend 

 Limestone. 



Lithostrotion juiiceu)n common, L. irregulare present. North 

 of the Tweed, L. viaccoyanuni plentiful. Clisiophyllids rare ; 

 small gasteropods not uncommon.* 



* I am indebted for the information respectingf tlie fauna of the Dun Limestone 

 to Mr. Carruthers and to Mr. Bisliop of Berwick. I have examined the bed near 

 Spital but fou-.ul no fo.sslls. 



