Page:Quarterly Journal of the Geological Society of London, vol. 33.djvu/725

Rh Fossils from the Loiver Coal-measures of Castlecomer. Crustacea Phillipsia pustulata (Schloth., sp.). LeperditiaOkeni? (Münst.,sp.>

Cepalopods Goniatites fasciculatus (M'Coy). crenistria (Phil.). Nautilus (like cyclostomus, Phil). Orthoceras Steinhaueri (Sow.).

Gasteropods Euomphalua (sp. inc.).

LAMELLIBRANCHS Aviculopecten (Lima) alternatus (M'Coy). granosus ?. Axinus (sp. inc.). Edmondia (small sp.). Pullastra bisti'iata (Portl.). scalaris (M'Coy).

Buachiopods

Athyris planosculata (Phil.). Orthis resupinata (Mart.). Productus semireticulatus (Mart.). Rhynclionella pleurodon (Phil.). Spirifer pinguis (Sow.), or trigonalis.

Crinoids Actinocrinus (joints of, abundant).

The above list of 16 genera and 19 species shows the essentially marine character of the fauna of this stage, and its close connection with the Lower Carboniferous group. The most remarkable, perhaps, of the whole series heads the list. Several portions of individuals of this trilobite were discovered ; and this is probably the first time its presence in the British Islands has been recorded in beds higher than the Yoredale shales, in which it is found in other parts of Ireland. In Morris's ' Catalogue of British Fossils ' it is placed in the Carboniferous Limestone both of England and Ireland ; and its survival into the stage of the Lower Coal-measures is another connecting link between the two formations. Further on, it will be shown that it has been recognized by Prof. Römer in beds of this stage in Silesia (p. 638). The Middle Coal-measures contain Anihracosia (Unio), which has been observed by Mr. Hard- man above the " Old Three-foot " coal.

Slieveardagh Coal-field, Co. Tipjperary.

The general section of this coal-basin resembles that of Kilkenny and Carlow. The beds lie along a sharp synclinal fold the axis of which ranges in a N.E. direction, in the centre of which the highest coal-seams occur. The district has been described by the officers of the Geological Survey, Messrs. F. J. Foot and J. O'Kelly, and the fossils by Mr. Baily. The shales overlying the lower coal (called "Upper and Lower Glengoole" seams) contain Aviculopecten, Mya-