Article: Trilobites from the Albany Division (Ordovician) of the Girvan District, Ayrshire

Two new genera, and nine new species of trilobites from the Albany mudstones with nodular limestones, east of Doularg, near Girvan, are described. The fauna is most closely allied to that of the superstes Mudstones, Aldons, having twenty-two of twenty-five genera in common, and fourteen species closely related. Outside the district the closest resemblance is to the lower Edinburg Formation (Porterfield Stage) of the Appalachian Valley of the U.S.A.