228 



THE PRESENT STATE OF OUR KNOWLEDGE OF 

 CARBONIFEROUS GEOLOGY. 



Dr. WHEELTON HIND, F.R.C.S., F.G.S. 



[Continued from page i/o). 

 BELGIUM. 



In Belgium the Visean Limestones have long been known 

 to yield a characteristic fauna, now recognised as corresponding 

 very perfectly with that of the Upper Dihunophyllum zone. 

 In the Valley of the Meuse and Sambre, and at Clavier, these 

 beds are succeeded by a Series of black shales, cherts, and thin 

 limestones, which yield a characteristic Pendleside fauna. 

 A fine section at Bioul, North-west of Dinant, shews the junction 

 of the Dihunophyllum zone and Pendleside Series. The passage 

 is a gradual one from a lithological standpoint, limestones 

 gradually becoming replaced by shales. 



The Pendleiide fauna I obtained here in a short time is 

 as follows : — 



Posidonomya membvanacea. 

 Posidoniella laevis. 

 Pseudamusum fibrillosum. 

 Glyphioceras (too crushed to 



determine). 

 Orthoceras striolatum. 



seal are. 

 Ostracoda in abundance. 



Listv acanthus beyrichi. 

 Phillipsia sp. 



Chonetes atf. Laguessiana. 

 Camarophoria papyracea. 

 Productus plicatus Sarres. 

 Spirifer bisulcata. 

 Athyris plauosulcata. 

 Orbiculoidea nitida. 

 Lingula mytiloides. 



Some few years ago I was invited by Mr. Dupont. then in 



char e of th 2 Musee de I'histoireNaturelle at Brussels, to examine 



and report on fossils collected by officers of the Service du carte 



from Clavier. Among others, the following typical species 



occurred : — 



Posidoniella laevis. 

 Pseiidamusa fibrillosum. 

 Posidonomya membranacea. 

 Chamocardiola footii. 

 Prolecanites compressus. 



Glyphioceras bilingue 

 spirale. 

 Glyphioceras diadema. 

 Strohoceras sulcatum. 

 Phillipsii cf. polleni. 



nd from shales at Vise, I determined : — 



Posidonomya becheri. I Pterinopecten papyracetts. 



Posidoniella laevis. \ 



As Icng ago as 1881, D.". Purvcs in his paper ' Sur la deline- 



a ur ]a Constitution de Tetage honillier superieur de la 



B Igique,* ;hcw d that the Caibcnife ous Limestone of 



* Bull de I'acad. Royale de Belgique, 3rd Series, Part II., No. 12. 



Na turaiist. 



