V«I- 55-] 



BEDDED EOCKS OF COUNTY WATEEFORD. 



'41 



he called the Carrigaghalia Series, from its typical fossiliferous 

 exposures near the rock of that uame. 



The shales near Newtown Head may he called the Eaheen 

 Shales, from their only exposure near the Eaheen stream, and 

 their fauna indicates a higher horizon than even the Carrigaghalia 

 Series ; for the Ortliis argentea-zone, to which they may he compared, 

 lies at the top of the Dicmnograptus-shaleB, to which it will be shown 

 that the graptolitic beds of the Carrigaghalia Series correspond. 



The fclsitic lavas and tuffs and the greenish slates, mudstones, 

 etc., which overlie the Eaheen Shales, are therefore the highest 

 rocks of the bedded series as yet observed. There is no evidence 

 to show to what the lavas, etc. below the Eaheen Shales exactly 

 correspond. As for the thick mass of barren limestones at Duna- 

 brattin Head above the beds with the Tramore Limestone fauna, 

 it can only be said that they rest conformably upon Stage 3, and 

 apparently form part of the same series. 



The relative positions of the beds, and local succession and corre- 

 lation, are represented in the accompanying table (p. 742). 



lY. Pal^ontological Notes. (PL XLIX.) 



Many of the fossils from the Ordovician beds on the "Waterford 

 coast have been mentioned or described by various palaeontologists. 

 The references to the papers by Baily and Lapworth on the grapto- 

 lites have been previously given (see pp. 720, 731), and other 

 references are given below. In M' Coy's ' Synopsis of the Silurian 

 Fossils of Ireland,' published in 1846, the following species from 

 Waterford are mentioned : — 



Encrinums Stokesii, M'Coy. 



Newtown Head. 



Fhacops Jamesii, Portl. Knockmahon, 



Tramore, 



Murchisoni, Portl. do. 



Asaphus Buchi, Brongn. (?), 



Newtown Head. 

 Trimtclens spticorvis, His. do. 



Ampyx nasvtiis,'D?i\m. do. 



Favosites fibrosa, Goldf. Knockmahon, 

 Tramorp. 



• pet7'opolita7m,'Pfir\(\. (?). do. & 



Ballydoiiane Bay. 

 AccmtJialepis Jamesii, M'Coy. 



Newtown Head. 



Portlock' had previously mentioned some species from County 

 "Waterford : — 



Murckisonia coralUi, Sow. 



Knock- 



mahon, Tramore, 



Leptcsna complanata. Sow., var. do. 



sericea, Sow. 



do. 



Orthis alternata. Sow. 



do. 



concentrica. Portl. 



do. 



crispa, M-Coy. 



do. 



elcgantula, Dalm. do. 



& New- 



town Head. 



(V prochictoides, M'Coy. 



Knock- 



mahon, Tramore. 



pseudopecten, M'Coy. 



do. 



riigifera, Portl. 



do. 



— — simplex, M'Coy. 



do. 



virgata, Sow. 



do. 



Spirifer tridens, M'Coy. 



do. 



Atrypa filosa, M'Coy. 



do. 



Arapyx Austimi, Portl. Tramore, 



Phacops Jamesii, Portl. do. 



Amphion psetidoarticulatus, 

 Portl. 



do. 



Asaphus dilatatus, Dalm. NewfoAvn 



Head. 



Illcsnus crassicaiida, Dalm. Tramore. 



1 ' Eep. Geol. Londond.' 1843, pp. 261, 283, 291, etc. 



