﻿436 DR. A. VAUGHAN ON" THE FAIIIS'AL STJCCESSION" [Aug. I908, 



Y. Summary and Conclusion. [C. A. M.] 



The following is a summary of the most important points dealt 

 with in the foregoing pages. 



(1) About 1100 feet of Carboniferous rocks are exposed in the 

 neighbourhood of Loughshinny. They consist mainly of limestones, 

 but they include a thick mass of coarse conglomerate (Lane Con- 

 glomerate) and many intercalated beds of shale and chert. The 

 highest beds are the Loughshinny Black Shales, with seams of chert. 

 The rocks have been much folded, and to some extent are faulted. 



(2) The lowest beds belong to some part of the BibunojpkyUum- 

 Zone, while the higher range through CyatJiaxoma-Beds into 

 Posidonomya-Lijnestones and Posidonoonya-^hales of Pendleside age. 



(3) The Lane Conglomerate may be on or near the horizon of 

 the Rush Conglomerate, as it is now admitted that the latter may 

 be of Dibunoi^JiyUum-age. 



(4) Local decalcification has caused the more or less complete 

 disappearance of some of the Cyathaxonia- and Posidonomya- 

 Limestones. 



In conclusion, I wish to express my best thanks to Dr. Yaughan 

 for his willing help in again undertaking the examination and 

 description of the fossils, the results of which are set out in the 

 following pages ; also to Dr. Wheelton Hind for examining the 

 lamellibranchs, gasteropods, etc., to Mr. E. G. Carruthers for help 

 in regard to some of the corals, and to Dr. E. Kidston, E.E.S., 

 for examining the plant-remains. 



YI. Faunal Succession and Correlation. [A. Y.] 



[* denotes a form figured in the text or in the Plates 

 which accompany this paper.] 



(1) Fauna of the Dibunophyllum-ljimestones ; 

 (L23, L24, and L 21). 



In ascending order : — 



{ 



(x) includes L 23 a, b, d and L 24 a. 

 (y) „ L23c?, L24 6, andL21^. 

 (z) „ L 24^ and L 21c, 6. 



(i) Corals: 



(x) Syringopora of. rarmdosa, Goldf., Ed. & H. 



(y) *Densiphylloid Zaphrentis, sp. nov. 



YsA Gyathophyllum Murchisooii, Ed. & H, Common , 



\^^J) Lithostrotion aft'.i cyathophylloides, Yaughan 



(2t) Petalaxis Portlocki, Ed. & H. 



y- f y| ^Carcmophylhim curkeenense, sp. nov. 



Y^ f y) *Clisiopkylhirji cf. curkeenense, Yaughan. 



^y^^l ^Ihhunophyllum afF. Muirlieadi, Thorns. & Nich 



^^) *I>^bunopJiyllum aff. Muirheadi, var.^ or sp nor 



1 Conyergent on KonincJcophyllum 0, Yaugnan 

 Convergent on Clisiophyllwn curJceenense, Vaughan. 



