566 



J. W. KIEKBY ON MAEINE POSSILS m THE 



Fossils of Zone 8, at 2S15 feet. 



Orthoceras, sp. 

 Bellerophon IJrii, Flem. 



' decussatus, Flem. 



Macrocheilus acutus, Sow. 

 Murchisonia striatula, De Kon. 



elongata, Tortlock. 



Avicula, sp. 

 Aviculopecten, sp. nov. 



sp. 



Cypricardia glabrata, M^Coy. 

 Edmondia rudis, M'Coy. 

 Leptodomus costellatus, M' Coy. 



Myalina, sp, 

 Schizodus Salteri, Eth. 

 Fenestella tuberculo-carinata, 



plebeia, M'Goy. 



Morrisii, M' Coy. 



Archseopora nexilis, De Kon. 



Synocladia, sp. nov. 



Alveolites septosa, Flem. 



Stenopora tumida, Fhill. 



Crinoids. 



Leperditia Okeni, var. 



Beyrichia, sp. 



Eth. 



The Polyzoa and the Coral, Stenoj)ora tumida, are by far the 

 most common fossils of this zone, some of the surfaces of both the 

 shale and the ironstone being covered with their remains. The 

 crinoidal fragments are also very abundant in the ironstones, vp'here 

 most of the shells are also mainly found. 



More than 200 feet of strata intervene. The sandstones of this 

 mass are yellow, purple, and grey in colour, finely rippled in places, 

 and often with thick shaly partings. The shales are charged with 

 ironstones chiefly in bands. There are three coals resting on fire- 

 clays, none of them exceeding a few inches in thickness. Stigmarian 

 rootlets prevail in the vicinity of the thin coals, and Gyclopteris 

 Hahellata is exceedingly common in some of the grey shales. Along 

 with this species are the remains of great numbers of what appear 

 to be fern-stems. 



In a bed of tough black shale, at 2956 feet, there occur the scales 

 of Bhizodus Rihberti, with the shells of Spirorhis attached, the 

 scales of smaller Ganoids, Oarhonia JRanTciniana, Carpolithes sp., 

 Lepidopliyllum,, and Gydopteris Jiahellata. 



About 20 feet lower down there is about 30 inches of purple 

 shale containing Sphenopteris affinis and S. dilatata abundantly 

 and in good preservation. 



At over 3000 feet there is a grey limestone (weathering yellow ) 

 with shaly partings, and about two feet thick, which I take to be a 

 marine deposit. 



Fossils of Zone 9, at S027 feet. 



Spirorbis carbonarius, Mii/rch. 

 Teeth and scales of small Ganoids. 

 Coprolites of Rhizodus (?). 

 Lepidostrobus, sp. 



Littorina scotoburdigalensis, Eth. 

 Naticopsis ? sp. 



Leperditia Okeni, var. scotoburdiga- 

 lensis, Sib. 

 ■ , var. elongata, J. Sf K. 



The Littorince are very abundant on certain surfaces of this bed ; 

 and the action of the sea and the weather brings them out beautifully 

 in relief. Leperditia Okeni, var. scotoburdigalensis, is even more 

 abundant than the univalve, for much of the rock is formed of its 

 carapaces. This small group of species is not so decidedly marine in 

 its features as the last. I consider it marine, principally on account 

 of the prevalence of Littorina scotoburdigalensis, which in other 



