A synopsis of the Silurian fossils of Ireland: Prepared by Frederick M'Coy from the collections made from the several districts examined by Sir Richard Griffith, as at present laid down on his geological map of Ireland: with descriptions of some additional species by J. W. Salter. With five lithographic plates
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abundant angles Atrypa Ballaghaderreen Ballygarvan beak Calymene cardinal area Carrickadaggan cephalothoracic furrows Chair of Kildare cheeks Cong County Dublin County Galway County Kerry County Kildare County Mayo County Tyrone County Waterford County Wexford County Wicklow Dingle distinguished dorsal valve Enniscorthy eye-lines Ferriter's Cove five lines flattened fossil front genus Geol gibbous glabella green slates half lines hinge-line inch Leenane length limestone of Chair Locality.—Common Locality.—In Locality.—Not uncommon Locality.—Rare Locality.—Very common M'Coy magnified margin mesial narrow nearly Orthis Phacops plates Pomeroy Portk Portrane posterior pygidium Rathdrum Ref.—SiL Syst resembles ridges sandstone of Boocaun sandstone of Killey sandstone of Tonlegee schists of Tirnaskea segments shell side Silurian slates of Ardaun slates of Doonquin slates of Ferriter's slates of Greenville slates of Kilbride slates of Slieve slates of Tirnaskea Slieve Roe slightly convex smooth species specimens spines Spirifer striae surface Tramore Trilobites tubercle ventral valve whorls width