368 



PROP. S. H. REYNOLDS AND DR. A. VATTGHAN ON [Aug. 191 I, 



At Burrington the division-line between C 1 and o must be 

 placed at the top of the laminosa dolomites : but fossil bands are too 

 infrequent in the dolomites at the top of C x and in the lower part 

 of C 2 , either to confirm or to disprove the abruptness of the faunal 

 transition. 



Ranges of Corals and Brachiopods in the Mid-Avonian 

 of the South-Western Province. 



c,. 



c.. 



s,. 



Corals. 



Zaphrentis Tconincki 



Large Caninids 



Cyathophyllum <j> 



Lithostrotion & Diphyphyllum 

 Clisiopbyllids 



Brachiopods. 



Productus corrugatiis 



Productus hemisphericiis 



Productus sublcBvis and 

 Productus plicatilis J. de C. Sow. 



Product i- Chonetes 



Spirifer striatus 



Spirifer clathratus 



Spirifer bisulcatus J. de C. Sow, 



Syringothyris cuspidata 



Seminula 







TISEAN or UPPER AVONIAN. 



C 2 : 



Lower (and main) portion, up to the White Oolite. 



Corals : — 



Michelinia grandis M'Coy. Common. 



Large Caninids. Not common. 



Cyathophyllum <p Vaugban : small form, convergent Zaphrentis konincki, 



mut. C 2 . 

 Carcinophyllum 9 Vaugban?: an early mutation. A single specimen. 



Brachiopods : — 



Productus corrugatus M'Coy, mut. C 2 . 

 Papilionaceous Chonetes. 



Abundant at one level. 



